3Com Network Router WL 542 User Manual

OfficeConnect

ADSL Wireless 11g Firewall Router

User Guide

Model WL-542

3CRWDR100A-72

3CRWDR100B-72

3CRWDR100U-72

http://www.3com.com/

Part No. DUA100A-72AAA02

Published August 2005

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CONTENTS

ABOUT THIS GUIDE

Naming Convention

Conventions

Feedback About this User Guide

Related Documentation

Example:

■

OfficeConnect ADSL Wireless 11g Firewall Router User Guide

Part Number DUA100A-72AAA01

Page 24

Do not use this e-mail address for technical support questions. For

information about contacting Technical Support, please refer to

Appendix E.

Documentation

In addition to this guide, each Router document set includes one

Installation Guide. This guide contains the instructions you need to install

and configure your Router.

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ABOUT THIS GUIDE

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INTRODUCING THE ROUTER

Welcome to the world of networking with 3Com^®. In the modern

business environment, communication and sharing information is crucial.

Computer networks have proved to be one of the fastest modes of

communication but, until recently, only large businesses could afford the

networking advantage.

OfficeConnectADSL The OfficeConnect ADSL Wireless 11g Firewall Router is designed to

Wireless 11g

Firewall Router

provide a cost-effective means of sharing a single broadband Internet

connection amongst several wired and wireless computers. The Router

also provides protection in the form of an electronic “firewall” preventing

anyone outside of your network from seeing your files or damaging your

computers. The Router can also prevent your users from accessing Web

sites which you find unsuitable.

Figure 1 shows an example network without a Router. In this network,

only one computer is connected to the Internet. This computer must

always be powered on for the other computers on the network to access

the Internet.

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CHAPTER 1: INTRODUCING THE ROUTER

Figure 1 Example Network Without a Router

When you use the Router in your network (Figure 2), it becomes your

connection to the Internet. Connections can be made directly to the

Router, or to an OfficeConnect Switch or Hub, expanding the number of

computers you can have in your network.

Figure 2 Example Network Using a Firewall Router

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Router Advantages

The advantages of the Router include:

■

Shared Internet connection for both wired and wireless computers

High speed 802.11g wireless networking

No need for a dedicated, “always on” computer serving as your

Internet connection

■

Cross-platform operation for compatibility with Windows, Unix and

Macintosh computers

■

Easy-to-use, Web-based setup and configuration

Provides centralization of all network address settings (DHCP)

Acts as a Virtual server to enable remote access to Web, FTP, and other

services on your network

■

Security — Firewall protection against Internet hacker attacks and

encryption to protect wireless network traffic

Package Contents

The Router kit includes the following items:

■

One OfficeConnect ADSL Wireless 11g Firewall Router

One power adapter for use with the Router

Four rubber feet

One Telephone Cable

One CD-ROM containing this User Guide

Installation Guide

One Support and Safety Information Sheet

One Warranty Flyer

If any of these items are missing or damaged, please contact your retailer.

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CHAPTER 1: INTRODUCING THE ROUTER

Minimum System

and Component

Requirements

Your Router requires that the computer(s) and components in your

network be configured with at least the following:

■

A computer with an operating system that supports TCP/IP

networking protocols (for example Windows 98/NT/Me/2000/XP, Unix,

Mac OS 8.5 or higher).

■

An Ethernet 10 Mbps or 10/100 Mbps NIC for each computer to be

connected to the four-port switch on your Router.

■

An 802.11b or 802.11g wireless NIC.

An active ADSL subscription and connection.

A Web browser that supports JavaScript, such as Netscape 4.7 or

higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher.

Front Panel

The front panel of the Router contains a series of indicator lights (LEDs)

that help describe the state of various networking and connection

operations.

Figure 3 Router - Front Panel

LAN Status

3CRWDR100A-72

Power SYNC OnlineWLAN

Green = 100M, Yellow = 10M, Flash = Activity

OfficeConnect ADSL Wireless 11g Firewall Router

1 Power LED

Green

Indicates that the Router is powered on.

2 SYNC LED

Green

If the LED is on it indicates that DSL connection is present. This LED

flashes during configuration at power up.

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Rear Panel

3 Online LED

Green

If this LED is on, your username/password has been authenticated

successfully with your ISP.

4 Wireless LAN (WLAN) Status LED

Green

If the LED is on it indicates that wireless networking is enabled. If the LED

is flashing, the link is OK and data is being transmitted or received. If the

LED is off, the Wireless LAN has been disabled in the Router, or there is a

problem. Refer to Chapter 6 “Troubleshooting”.

5 LAN Status LEDs

Green

If the LED is on, the link between the port and the next piece of network

equipment is OK. If the LED is flashing, the link is OK and data is being

transmitted or received. If the LED is off, nothing is connected, or the

connected device is switched off, or there is a problem with the

connection (refer to Chapter 6 “Troubleshooting”). The port will

automatically adjust to the correct speed and duplex.

Rear Panel

The rear panel (Figure 4) of the Router contains four LAN ports, one ADSL

port, a reset button, a power switch, and a power adapter socket.

Figure 4 Router - Rear Panel

12 VDC

1A MAX

ADSL

Power

Reset

LAN4

LAN3

LAN2

LAN1

6 Wireless Antennae

The antennae on the product should be placed in a ‘V’ position when

initially installed.

CAUTION: Do not force the antennae beyond their mechanical stops.

Rotating the antennae further may cause damage.

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CHAPTER 1: INTRODUCING THE ROUTER

7 ADSL Port

Using the RJ11 cable provided, you should connect your Router to the

telephone socket via a splitter.

8 Power Adapter Socket

Only use the power adapter that is supplied with this Route r . D o not use

any other adapter.

9 Reset Button

If you want to reset your Router to factory default settings, and cannot

access the web management interface (for example, due to a lost

password), then you may use this button. Refer to “Forgotten Password

and Reset to Factory Defaults” on page 84 for further details.

10 Power Switch

Push this switch to the “in” position to turn the unit on. In the “out”

position, the unit is off.

11 Ethernet Ports

Using suitable RJ45 cables, you can connect your Router to a computer,

or to any other piece of equipment that has an Ethernet connection (for

example, a hub or a switch). These ports have an automatic MDI/MDIX

feature, which means either straight-through or a crossover cable can be

used.

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INSTALLING THE ROUTER

Introduction

This chapter will guide you through a basic installation of the Router,

including:

■

Connecting the Router to the Internet.

Connecting the Router to your network.

Setting up your computers for networking with the Router.

Safety Information Please note the following:

WARNING: Please read the “Safety Information” section in Appendix C

before you start.

VORSICHT: Bitte lesen Sie den Abschnitt “Wichtige Sicherheitshinweise”

sorgfältig durch, bevor Sie das Gerät einschalten.

AVERTISSEMENT: Veuillez lire attentivement la section “Consignes

importantes de sécurité” avant de mettre en route.

Positioning the

Router

You should place the Router in a location that:

■

is conveniently located for connection to the telephone socket.

■

is centrally located to the wireless computers that will connect to the

Router. A suitable location might be on top of a high shelf or similar

furniture to optimize wireless connections to computers in both

horizontal and vertical directions, allowing wider coverage.

■

allows convenient connection to the computers that will be connected

to the four LAN ports on the rear panel, if desired.

allows easy viewing of the front panel LED indicator lights, and access

to the rear panel connectors, if necessary.

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CHAPTER 2: INSTALLING THE ROUTER

When positioning your Router, ensure:

■

It is out of direct sunlight and away from sources of heat.

Cabling is away from power lines, fluorescent lighting fixtures, and

sources of electrical noise such as radios, transmitters and broadband

amplifiers.

■

Water or moisture cannot enter the case of the unit.

Air flow around the unit and through the vents in the side of the case

is not restricted. 3Com recommends you provide a minimum of

25 mm (1 in.) clearance.

Using the Rubber Use the four self-adhesive rubber feet to prevent your Router from

Feet moving around on your desk or when stacking with flat top units. Only

stick the feet to the marked areas at each corner of the underside of your

Router.

Powering Up the

Router

To power up the Router:

1 Plug the power adapter into the power adapter socket located on the

back panel of the Router.

2 Plug the power adapter into a standard electrical wall socket.

3 Press the power button located on the back of the Router.

Connecting the

Router

The first step for installing your Router is to physically connect it to the

telephone socket and then connect it to a computer in order to be able to

access the Internet. See Figure 5:

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Connecting the Router

Figure 5 Connecting the Router

Power

Supply Unit

3Com OfficeConnect

ADSL Wireless 11g Firewall Router

Telephone

Socket

Splitter/

Microfilter Block

Your PC

Wireless

Users

1 Run the provided telephone cable from the wall jack providing ADSL

service to the ADSL port on your ADSL Router. When inserting an ADSL

RJ-11 plug, be sure the tab on the plug clicks into position to ensure that

it is properly seated. If you are using splitterless ADSL service, add

low-pass filters between the ADSL wall jack and your telephones. (These

filters pass voice signals through but filter data signals out.)

2 Then:

If you are using a full-rate (G.dmt) connection, your service provider

■

will attach the outside ADSL line to a data/voice splitter. In this case

you can connect your phones and computer directly to the splitter as

shown below (Figure 6):

■

If you are using a splitterless (G.lite) connection, then your service

provider will attach the outside ADSL line directly to your phone

system. In this case you can connect your phones and computer

directly to the incoming ADSL line, but you will have to add low-pass

filters to your phones as shown below (Figure 7)

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CHAPTER 2: INSTALLING THE ROUTER

Figure 6 Installing with a splitter

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Connecting the Router

Figure 7 Installing without a splitter

You have now completed the hardware installation of your Router. Next

you need to set up your computers so that they can make use of the

Router to communicate with the Internet.

3Com recommends that you perform the initial Router configuration

from a computer that is directly connected to one of the LAN ports.

If you configure the Router from a wireless computer, note that you may

lose contact with the Router if you change the wireless configuration.

To communicate wirelessly with your Router, your wireless NIC should be

set as follows:

■

Encryption — none

SSID — 3Com

Channel — 11

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CHAPTER 2: INSTALLING THE ROUTER

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SETTING UP YOUR COMPUTERS

The Router has the ability to dynamically allocate network addresses to

the computers on your network, using DHCP. However, your computers

need to be configured correctly for this to take place. To change the

configuration of your computers to allow this, follow the instructions in

this chapter.

Obtaining an IP

Address

Automatically

Windows 2000 If you are using a Windows 2000-based computer, use the following

procedure to change your TCP/IP settings:

1 From the Windows Start Menu, select Settings > Control Panel.

2 Double click on Network and Dial-Up Connections.

3 Double click on Local Area Connection.

4 Click on Properties.

5 A screen similar to Figure 8 should be displayed. Select Internet Protocol

TCP/IP and click on Properties.

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CHAPTER 3: SETTING UP YOUR COMPUTERS

Figure 8 Local Area Properties Screen

6 Ensure that the options Obtain an IP Address automatically, and Obtain

DNS server address automatically are both selected as shown in Figure 9.

Click OK.

Figure 9 Internet Protocol (TCP/IP) Properties Screen

7 Restart your computer.

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Obtaining an IP Address Automatically

Windows XP

1 From the Windows Start menu, select Control Panel.

2 Click on Network and Internet Connections.

3 Click on the Network Connections icon.

4 Double click on LAN or High Speed Connection icon. A screen titled Local

Area Connection Status will appear.

5 Select Internet Protocol TCP/IP and click on Properties.

6 Ensure that the options Obtain an IP Address automatically, and Obtain

DNS servers automatically are both selected. Click OK.

7 Restart your computer.

Windows 98/ME

1 From the Windows Start Menu, select Settings > Control Panel.

2 Double click on Network. Select the TCP/IP item for your network card

and click on Properties.

3 In the TCP/IP dialog, select the IP Address tab, and ensure that Obtain IP

address automatically is selected. Click OK.

Macintosh If you are using a Macintosh computer, use the following procedure to

change your TCP/IP settings:

1 From the desktop, select Apple Menu, Control Panels, and TCP/IP.

2 In the TCP/IP control panel, set Connect Via: to Ethernet.

3 In the TCP/IP control panel, set Configure: to Using DHCP Server.

4 Close the TCP/IP dialog box, and save your changes.

5 Restart your computer.

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CHAPTER 3: SETTING UP YOUR COMPUTERS

Disabling PPPoE

and PPTP Client

Software

If you have PPPoE client software installed on your compute r , y ou will

need to disable it. To do this:

1 From the Windows Start menu, select Settings > Control Panel.

2 Double click on Internet Options.

3 Select the Connections Tab. A screen similar to Figure 10 should be

displayed.

4 Select the Never Dial a Connection option.

Figure 10 Internet Properties Screen

You may want to remove the PPPoE client software from your computer

to free resources, as it is not required for use with the Router.

Disabling Web

Proxy

Ensure that you do not have a web proxy enabled on your computer.

Go to the Control Panel and click on Internet Options. Select the

Connections tab and click LAN Settings at the bottom. Make sure that

the Use Proxy Server option is unchecked.

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RUNNING THE SETUP WIZARD

Accessing the Setup

Wizard

The Router setup program is Web-based, which means that it is accessed

through your Web browser (Netscape Navigator 4.7 or higher, Internet

Explorer 5.0 or higher, or Mozilla 1.2.1 or higher).

To use the Setup Wizard:

1 Ensure that you have at least one computer connected to the Router.

Refer to Chapter 2 for details on how to do this.

2 Launch your Web browser on the computer.

3 Enter the following URL in the location or address field of your browser:

http://192.168.1.1 (Figure 11). The Login screen displays.

Figure 11 Web Browser Location Field (Factory Default)

4 To log in as an administrator, enter the password (the default password is

admin) in the Password field and click Log in (Figure 12).

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CHAPTER 4: RUNNING THE SETUP WIZARD

Figure 12 Router Login Screen

5 When you have logged in either:

■

The Status screen will appear (Figure 13). Select Setup Wizard from

the menu.

■

If your Router has not been configured before, the Wizard will launch

automatically (refer to Figure 14).

6 You will be guided step by step through a basic setup procedure.

Figure 13 Status Screen

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Accessing the Setup Wizard

Setup Wizard - Figure 14 Connection Type Screen

Connection Type

The Connection Type screen allows you to set up the Router for the type

of Internet connection you have. Before setting up your connection type,

have your account information from your ISP ready.

Select a DSL mode from the following:

■

PPPoE — PPP over Ethernet, providing routing for multiple PCs, see

page 28

PPPoA — PPP over ATM, providing routing for multiple PCs, see

page 29

Bridge Mode (for a single PC) — RFC1483 Bridged Mode, for single

PCs only, see page 31

Routing Mode over ATM — RFC1483 Routed Mode, for multiple PCs,

see page 32

Dynamic/Fixed IP in 1483 Bridge Mode (for multiple PCs), see page 33

and click Next.

For further information on selecting a mode see “Internet Settings” on

page 46.

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CHAPTER 4: RUNNING THE SETUP WIZARD

PPPoE Mode

Figure 15 PPPoE Screen

To set up the router for use with a PPP over Ethernet (PPPoE) connection,

use the following procedure:

1 Enter your PPP over Ethernet user name in the Username text box.

2 Enter your PPP over Ethernet password in the Password text box.

3 Re-type your PPP over Ethernet password in the Retype Password text

box.

4 Enter your VPI and VCI information in the VPI/VCI text boxes.

5 Select the encapsulation type (LLC or VC MUX) in the Encapsulation

drop-down list. This information will have been provided to you by your

ISP.

6 Check all of your settings, and then click Next. The Wireless Settings

screen is displayed.

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Accessing the Setup Wizard

Figure 16 Wireless Settings Screen

7 Set the Wireless Channel you want to use from the Channel drop-down

list.

8 Specify the SSID to be used by your Wireless Network in the SSID field. If

there are other wireless networks in your area, you should give your

wireless network a unique name.

PPPoA Mode

Figure 17 PPPoA Screen

To set up the router for use with a PPP over ATM (PPPoA) connection, use

the following procedure:

1 Enter your PPP over ATM user name in the Username text box.

2 Enter your PPP over ATM password in the Password text box.

3 Re-type your PPP over ATM password in the Retype Password text box.

4 Enter your VPI and VCI information in the VPI/VCI text boxes.

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CHAPTER 4: RUNNING THE SETUP WIZARD

5 Select the encapsulation type (LLC or VC MUX) in the Encapsulation

drop-down list. This information will have been provided to you by your

ISP.

6 Check all of your settings, and then click Next. The Wireless Settings

screen is displayed.

Figure 18 Wireless Settings Screen

7 Set the Wireless Channel you want to use from the Channel drop-down

list.

8 Specify the SSID to be used by your Wireless Network in the SSID field. If

there are other wireless networks in your area, you should give your

wireless network a unique name.

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Accessing the Setup Wizard

Bridge Mode (for a single PC) (RFC 1483 Bridged Mode)

To set up the Router for use with an RFC1483 bridged connection:

Figure 19 Bridged Mode Configuration Screen

1 Enter your VPI and VCI information in the VPI/VCI text boxes.

2 Select the encapsulation type (LLC or VC MUX) in the Encapsulation

drop-down list. This information will have been provided to you by your

ISP.

3 Check all of your settings, and then click Next. The Wireless Settings

screen is displayed.

Figure 20 Wireless Settings Screen

4 Set the Wireless Channel you want to use from the Channel drop-down

list.

5 Specify the SSID to be used by your Wireless Network in the SSID field. If

there are other wireless networks in your area, you should give your

wireless network a unique name.

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CHAPTER 4: RUNNING THE SETUP WIZARD

Routing Mode over ATM (RFC 1483 Routed Mode)

To set up the Router for use with an RFC1483 routed connection:

Figure 21 Routing Mode Screen

1 Enter your Internet IP address in the WAN IP text box.

2 Enter the subnet mask in the Subnet Mask text box.

3 Enter the default router in the Default Gateway text box.

4 Enter the DNS address in the DNS text box.

5 Enter your VPI and VCI information in the VPI/VCI text boxes.

6 Select the encapsulation type (LLC or VC MUX) in the Encapsulation

drop-down list. This information will have been provided to you by your

ISP.

7 Check all of your settings, and then click Next.The Wireless Settings

screen is displayed.

Figure 22 Wireless Settings Screen

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Accessing the Setup Wizard

8 Set the Wireless Channel you want to use from the Channel drop-down

list.

9 Specify the SSID to be used by your Wireless Network in the SSID field. If

there are other wireless networks in your area, you should give your

wireless network a unique name.

Dynamic/Fixed IP in 1483 Bridge Mode (For Multiple PCs)

For bridge mode to work, you need to assign an IP address to the Router.

You can either configure the Router to obtain an IP address automatically

from a DHCP server or assign a fixed or static IP address to it.

Figure 23 Dynamic/Fixed IP for Bridge Mode Screen

To obtain an IP address automatically from a DHCP server:

Check the Get WAN IP By DCHP field, and then click Next. The Wireless

Settings screen is displayed.

To assign a fixed IP address:

1 Enter your Internet IP address in the WAN IP text box.

2 Enter the subnet mask in the Subnet Mask text box.

3 Enter the default router in the Default Gateway text box.

4 Enter the DNS address in the DNS text box.

5 Enter your VPI and VCI information in the VPI/VCI text boxes.

6 Select the encapsulation type (LLC or VC MUX) in the Encapsulation

drop-down list. This information will have been provided to you by your

ISP.

7 Check all of your settings, and then click Next. The Wireless Settings

screen is displayed.

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CHAPTER 4: RUNNING THE SETUP WIZARD

Figure 24 Wireless Settings Screen

8 Set the Wireless Channel you want to use from the Channel drop-down

list.

9 Specify the SSID to be used by your Wireless Network in the SSID field. If

there are other wireless networks in your area, you should give your

wireless network a unique name.

Configuration Summary

Figure 25 Configuration Summary Screen

When you complete the Setup Wizard, a configuration summary will

display. Verify the configuration information of the Router and then click

Apply to save your settings. 3Com recommends that you print this page

for your records.

Your Router is now configured and ready for use.

See Chapter 5 for a detailed description of the Router configuration.

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CONFIGURING THE ROUTER

Navigating

This chapter describes all the screens available through the Router

configuration pages, and is provided as a reference. To get to the

configuration pages, browse to the Router by entering the URL in the

location bar of your browser. The default URL is http://192.168.1.1

but if you changed the Router LAN IP address during initial configuration,

use the new IP address instead. When you have browsed to the Router,

Through the Router

Configuration

Pages

Main Menu At the left side of all screens is a main menu, as shown in Figure 26 on

page 35. When you click on a topic from the main menu, that page will

appear in the main part of the screen.

Status Screen

The Status screen allows you to view a summary of the Router

configuration, including the current Router status.

Status Figure 26 Status Screen

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CHAPTER 5: CONFIGURING THE ROUTER

LAN Setup

Your Router is equipped with a DHCP server that will automatically assign

IP addresses to each computer on your network. The factory default

settings for the DHCP server will work in most any application. If you

need to make changes to the settings, you can do so.

The changes that you can make are:

■

Change the Internal IP address of the Router. The default is

192.168.1.1

■

Change the Subnet Mask. The default is 255.255.255.0

Enable/Disable the DHCP Server Function. Default is ON (Enabled)

Specify the Starting and Ending IP Pool Address. Default is Starting: 2 /

Ending: 254

■

Specify the IP address Lease Time. Default is Half day

Specify a local Domain Name. Default is NONE

To make changes, click LAN Settings on the main menu.

The Router will also provide you with a list of all client computers

connected to the network.

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LAN Setup

LAN Settings The LAN Settings screen is used to specify the LAN IP address of your

Router, and to configure the DHCP server.

Figure 27 LAN Settings Screen

1 Select LAN Settings and then specify the Router IP Address and Subnet

Mask in the appropriate fields. The default IP address of the Router is

192.168.1.1.

2 If you want to use the Router as a DHCP Server, click in the On check

option.

3 If you need to, you can change the range of addresses given out by the

Router by changing the IP Pool Start Address and IP Pool End Address

fields.

4 Specify the DHCP Lease time by selecting the required value from the

Lease Time drop down list. The lease time is the length of time the DHCP

server will reserve the IP address for each computer

5 Specify the Local Domain Name for your network.

This step is optional.

6 Check all of your settings, and then click Apply.

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CHAPTER 5: CONFIGURING THE ROUTER

DHCP Clients List

The DHCP Clients List provides details on the devices that have received IP

addresses from the Router. The list is only created when the Router is set

up as a DHCP server. For each device that is connected to the LAN the

following information is displayed:

■

IP address — The Internet Protocol (IP) address issued to the client

machine.

■

Host Name — The client machine’s host name, if configured.

MAC Address — The Media Access Control (MAC) address of the

client’s network card.

■

Client Type — Whether the client is connected to the Router by wired

or wireless connection.

As you connect more devices, the client list will grow to a maximum

number of 253 clients.

From this section of the screen, you can do the following:

■

In the table, check the Fix text box to permanently fix the IP address.

In the table, click Release to release the displayed IP address.

Click New to allocate an IP address to a MAC address. If you click

New, a screen similar to that shown in Figure 28 will be displayed.

Enter the required details and click Apply to save your settings.

Figure 28 Editing DHCP Clients List Screen

The DHCP server will give out addresses to both wired and wireless

clients.

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Wireless Settings

From these pages, you can configure the settings for wireless

connections.

Figure 29 Wireless Settings Screen

This screen allows you to enable or disable the wireless section of your

LAN. When disabled, no wireless PCs can gain access to either the

Internet or other PCs on your Wired or Wireless LAN through this Router.

Select the required setting, and press Apply.

Configuring Wireless Click Configuration on the left-hand menu, the Wireless Configuration

Screen displays.

Figure 30 Wireless Configuration Screen

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CHAPTER 5: CONFIGURING THE ROUTER

To enable Wireless function:

1 Select the Wireless Channel you want to use from the Channel

drop-down list.

2 Specify the SSID to be used by your Wireless Network in the SSID field. If

there are other wireless networks in your area, you should give your

wireless network a unique name.

3 Enable or disable SSID Broadcast.

A feature of many wireless network adapters is that a computer's SSID

can be set to ANY, which means it looks randomly for any existing

wireless network. The available networks are then displayed in a site

survey, and your computer can select a network. By clicking disable, you

can block this random search, and set the computer's SSID to a specific

network (for example, WLAN). This increases network security. If you

decide to enable SSID Broadcast, ensure that you know the name of your

network first.

4 In the Wireless Mode drop down list, select whether your router will

operate in 11b mode only, 11g mode only, or mixed 11b and 11g.

5 Click Apply.

Encryption This feature prevents any non-authorized party from reading or changing

your data over the wireless network.

Figure 31 Encryption Screen

From this screen, you can select the wireless security mode that you want

to use. There are five selections:

■

Disabled (see page 41)

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Wireless Settings

■

WPA-PSK (no Server) (see page 41)

128-bit WEP (see page 42)

64-bit WEP (see page 43)

WPA (with RADIUS Server) (see page 44)

Select the required value from the drop down list, and press Apply.

Disabled

In this mode, wireless transmissions will not be encrypted, and will be

visible to everyone. However, when setting up or debugging wireless

networks, it is often useful to use this security mode.

WPA-PSK (no server)

WPA (WiFi Protected Access) provides dynamic key changes and

constitutes the best security solution. In a wireless network where not all

devices support WPA, WEP (Wired Equivalent Privacy) should be used.

Figure 32 WPA-PSK (no server) Screen

To enable WPA-PSK:

1 Enter the pre-shared key in the Pre-shared Key (PSK) field. The pre-shared

key is a password, in the form of a word, phrase or series of letters and

numbers. The key must be between 8 and 63 characters long and can

include spaces and symbols.

Note that each client that connects to the network must use the same

key.

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CHAPTER 5: CONFIGURING THE ROUTER

2 Optionally, check the Hide PSK check box, if you want the key that you

enter to be shown on the screen as a series of asterisks (*).

3 Click Apply.

128-bit WEP

WEP is the basic mechanism to transmit your data securely over the

wireless network. Matching encryption keys must be setup on your

Router and wireless client devices to use WEP.

Figure 33 128-bit WEP Screen

To enable 128-bit WEP:

1 You can enter the 128-bit WEP key manually:

■

enter your WEP key as 13 pairs of hex digits (0-9, A-F).

Or you can generate the 128-bit WEP key automatically:

■

enter a memorable passphrase in the Passphrase box, and then

click Generate to generate the hex keys from the passphrase.

The WEP keys on each device on the wireless network must be identical.

In 128-bit WEP mode, only one WEP key (key 1) can be specified.

2 Click Apply.

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Wireless Settings

64-bit WEP

WEP is the basic mechanism to transmit your data securely over the

wireless network. Matching encryption keys must be setup on your

Router and wireless client devices to use WEP.

Figure 34 64-bit WEP Screen

To enable 64-bit WEP:

1 Manually enter the key:

■

enter the WEP key as 5 pairs of hex digits (0-9, A-F).

Automatically generate the key:

■

enter a memorable passphrase in the Passphrase box, and then click

Generate to generate the hex keys from the passphrase.

For 64-bit WEP, you can enter up to four keys, in the fields Key 1 to Key 4.

The radio button on the left hand side selects the key that is used in

transmitting data.

Note that all four WEP keys on each device in the wireless network must

be identical.

2 Click Apply.

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CHAPTER 5: CONFIGURING THE ROUTER

WPA (with RADIUS Server)

WPA (WiFi Protected Access) provides dynamic key changes and

constitutes the best security solution. On a wireless network where not all

devices support WPA, WEP (Wired Equivalent Privacy) should be used.

Wireless Protected Access using a server to distribute keys to the clients,

and this function requires that a Radius server is running on the network.

Figure 35 WPA (with RADIUS Server) Screen

To enable WPA with Radius server:

1 Enter the IP address of the RADIUS server on your network into the

RADIUS Server field.

2 Enter the port that the RADIUS server is operating on in the RADIUS Port

field.

3 Enter the key for the RADIUS server in the RADIUS Key field.

4 By default, the WPA keys are changed every hour, but if you want to

change this you can do so by specifying the required time in the Re-key

Interval field, in minutes.

5 Click Apply.

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Wireless Settings

Wireless WDS Settings

The Router supports WDS (Wireless Distribution System). WDS enables

one or more Access Points to rebroadcast received signals to extend

range and reach, though this can affect the overall throughput of data.

Figure 36 Wireless WDS Settings Screen

To enable wireless repeating:

1 Check the Enable WDS check box.

2 Enter the MAC address(es) of one or more access points in the AP MAC

Address table.

3 Click Apply.

To refresh the list of available access points, click Rescan Wireless

Networking.

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CHAPTER 5: CONFIGURING THE ROUTER

Internet Settings

From these pages, you can configure the settings for your DSL

connection.

Connection Type The Internet Settings screen is used to configure the parameters for your

DSL connection. The information necessary to complete these screens

should be obtained from your ISP. Check with your ISP as for what type of

connection you should choose.

Figure 37 Internet Settings Screen

There are six options available for the DSL connection mode:

■

PPPoE — PPP over Ethernet, providing routing for multiple PCs (see

page 47)

PPPoA — PPP over ATM, providing routing for multiple PCs (see

page 49)

Bridge Mode — RFC1483 Bridged Mode, for single PCs only (see

page 51)

Routing Mode over ATM — RFC1483 Routed Mode, for multiple PCs

(see page 52)

■

Dynamic/Fixed IP in 1483 Bridge Mode (for multiple PCs) (see page 53)

Disable — To disable the Internet connection function (see page 55)

Click Edit to set the detail settings.

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Internet Settings

PPPoE

PPP over Ethernet, providing routing for multiple PCs. To configure this

page correctly, you should obtain the information on this page from your

ISP.

Figure 38 PPPoE Settings Screen

1 Select PPPoE from the Protocol drop-down menu.

2 Then enter the IP address and Subnet Mask information provided by your

ISP into the IP address and Subnet Mask fields.

3 Enter the VPI and VCI parameters provided to you by your ISP in the VPI

and VCI fields.

4 Select the encapsulation type (LLC or VC MUX) in the Encapsulation field.

This information will have been provided to you by your ISP.

5 Select the type of Quality of Service (CBR, UBR or VBR) in the QoS field.

■

CBR (constant bit rate): the CBR service class is intended for

real-time applications, for example, those requiring tightly

constrained delay and delay variation, such as voice and video

applications. The consistent availability of a fixed quantity of

bandwidth is considered appropriate for CBR service.

■

UBR (unspecified bit rate): the UBR service class is intended for

delay-tolerant or non-real-time applications, for example, those

which do not require tightly constrained delay and delay variation,

such as traditional computer communications applications. The

UBR service may be considered as "best effort service".

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CHAPTER 5: CONFIGURING THE ROUTER

■

VBR (variable bit rate): QoS class defined by the ATM Forum for

ATM networks. VBR is subdivided into a real time (RT) class and

non-real time (NRT) class. VBR (RT) is used for connections in which

there is a fixed timing relationship between samples. VBR (NRT) is

used for connections in which there is no fixed timing relationship

between samples, but that still need a guaranteed QoS. Compare

with ABR, CBR, and UBR.

6 Enter the PCR/SCR/MBS values.

7 Select the connection type from the Connect Type drop-down menu.

■

Always Connected means that Internet connection to your ISP is

always on.

Auto - Triggered by Traffic means your Router will automatically

connect to your ISP every time a PC needs to access the Internet.

Manual - Start in Disconnected means that after re-booting the

Router, the Internet connection will need to be re-established

manually by the user.

■

Manual - Start in Connected means that after re-booting the

Router, it will automatically establish connection to your ISP.

Manual - Start in Last State means that after re-booting the Router,

the Internet connection will stay in the previous condition before

the reboot.

8 If you want your Router to automatically disconnect from the Internet

after a period of inactivity, specify a time in the Idle Time (Minutes) field.

Enter a value of 0 to disable this timeout.

9 Enter the User Name assigned to you by your ISP in the User Name field.

And enter the password assigned to you by your ISP in the Password field.

Re-enter your password in the Confirm Password field.

10 Enter the MTU value supplied by your ISP. If you do not know this, leave it

at the default value.

11 Click Apply.

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Internet Settings

PPPoA

PPP over ATM, this is a popular choice among European DSL providers. To

configure this page correctly, you should obtain the information on this

page from your ISP.

Figure 39 PPPoA Settings Screen

1 Select PPPoA from the Protocol drop-down menu.

2 Enter the VPI and VCI parameters provided to you by your ISP in the VPI

and VCI fields.

3 Select the encapsulation type (LLC or VC MUX) in the Encapsulation Type

field. This information is provided to you by your ISP.

4 Select the type of Quality of Service (CBR, UBR or VBR) in the QoS field.

■

CBR (constant bit rate): the CBR service class is intended for

real-time applications, for example, those requiring tightly

constrained delay and delay variation, such as voice and video

applications. The consistent availability of a fixed quantity of

bandwidth is considered appropriate for CBR service.

UBR (unspecified bit rate): the UBR service class is intended for

delay-tolerant or non-real-time applications, for example, those

which do not require tightly constrained delay and delay variation,

such as traditional computer communications applications. The

UBR service may be considered as "best effort service".

VBR (variable bit rate): QoS class defined by the ATM Forum for

ATM networks. VBR is subdivided into a real time (RT) class and

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CHAPTER 5: CONFIGURING THE ROUTER

non-real time (NRT) class. VBR (RT) is used for connections in which

there is a fixed timing relationship between samples. VBR (NRT) is

used for connections in which there is no fixed timing relationship

between samples, but that still need a guaranteed QoS. Compare

with ABR, CBR, and UBR.

5 Enter the PCR/SCR/MBS values.

6 IP assigned by ISP:

■

If your ISP assigns your IP address dynamically then select Yes in the

IP assigned by ISP field and proceed to step 7.

■

If your ISP has assigned you a fixed or static IP address, select No in

the IP assigned by ISP field.

Then enter the IP address and Subnet Mask information provided

by your ISP into the IP address and Subnet Mask fields.

7 Select the connection type from the Connect Type drop-down menu.

■

Always Connected means that Internet connection to your ISP is

always on.

Auto - Triggered by Traffic means your Router will automatically

connect to your ISP every time a PC needs to access the Internet.

Manual - Start in Disconnected means that after re-booting the

Router, the Internet connection will need to be re-established

manually by the user.

■

Manual - Start in Connected means that after re-booting the

Router, it will automatically establish connection to your ISP.

Manual - Start in Last State means that after re-booting the Router,

the Internet connection will stay in the previous condition before

the reboot.

8 If you want your Router to automatically disconnect from the Internet

after a period of inactivity, specify a time in the Idle Time (Minutes) field.

Enter a value of 0 to disable this timeout.

9 Enter the User Name assigned to you by your ISP in the User Name field.

Enter the password assigned to you by your ISP in the Password field.

Re-enter your password in the Confirm Password field.

10 Enter the MTU value supplied by your ISP. If you do not know this, leave it

at the default value.

11 Click Apply.

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Internet Settings

Bridge Mode (For a Single PC) (RFC 1483 Bridged Mode)

If the ISP limits some specific computers to access Internet, that means

only the traffic to/from these computers will be forwarded and the other

will be filtered. In this case, bridge modem is used to connect to the ISP.

The ISP will generally give one Internet account and limit only one

computer to access the Internet. Check with your ISP to determine if this

mode is used for your DSL connection. To configure this page correctly,

you should also obtain the information on this page from your ISP.

Figure 40 Bridge Mode (For Single PC) Screen

After clicking Edit on the ATM PVC page, the ATM Interface page

appears.

1 Select Bridge Mode from the Protocol drop-down menu.

2 Enter the VPI and VCI parameters provided to you by your ISP in the VPI

and VCI fields.

3 Select the encapsulation type (LLC or VC MUX) in the Encapsulation Type

field. This information will have been provided to you by your ISP.

4 Select the type of Quality of Service that you want from the QoS Class

drop-down menu.

■

CBR (constant bit rate): the CBR service class is intended for

real-time applications, for example, those requiring tightly

constrained delay and delay variation, such as voice and video

applications. The consistent availability of a fixed quantity of

bandwidth is considered appropriate for CBR service.

■

UBR (unspecified bit rate): the UBR service class is intended for

delay-tolerant or non-real-time applications, for example, those

which do not require tightly constrained delay and delay variation,

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CHAPTER 5: CONFIGURING THE ROUTER

such as traditional computer communications applications. The

UBR service may be considered as "best effort service".

■

VBR (variable bit rate): QoS class defined by the ATM Forum for

ATM networks. VBR is subdivided into a real time (RT) class and

non-real time (NRT) class. VBR (RT) is used for connections in which

there is a fixed timing relationship between samples. VBR (NRT) is

used for connections in which there is no fixed timing relationship

between samples, but that still need a guaranteed QoS. Compare

with ABR, CBR, and UBR.

5 Enter the PCR/SCR/MBS values.

6 Click Apply.

Routing Mode over ATM (RFC 1483 Routed Mode)

This mode is commonly used with either dynamic or static IP addressing.

In this mode the WAN ADSL port will be configured with an IP address

provided by the ISP. To configure this page correctly, you should obtain

the information on this page from your ISP.

Figure 41 Routing Mode over ATM Screen

After clicking Edit on the ATM PVC page, the ATM Interface page

appears.

1 Select Routing Mode over ATM from the Protocol drop-down menu.

2 Enter the IP address, Subnet Mask and Default Gateway information

provided by your ISP into the IP address, Subnet Mask and ISP Default

Gateway fields.

3 Enter the VPI and VCI parameters provided to you by your ISP in the VPI

and VCI fields.

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Internet Settings

4 Select the encapsulation type (LLC or VC MUX) in the Encapsulation field.

This information will have been provided to you by your ISP.

5 Select the type of Quality of Service that you want from the QoS Class

drop-down menu.

■

CBR (constant bit rate): the CBR service class is intended for

real-time applications, for example, those requiring tightly

constrained delay and delay variation, such as voice and video

applications. The consistent availability of a fixed quantity of

bandwidth is considered appropriate for CBR service.

UBR (unspecified bit rate): the UBR service class is intended for

delay-tolerant or non-real-time applications, for example, those

which do not require tightly constrained delay and delay variation,

such as traditional computer communications applications. The

UBR service may be considered as "best effort service".

VBR (variable bit rate): QoS class defined by the ATM Forum for

ATM networks. VBR is subdivided into a real time (RT) class and

non-real time (NRT) class. VBR (RT) is used for connections in which

there is a fixed timing relationship between samples. VBR (NRT) is

used for connections in which there is no fixed timing relationship

between samples, but that still need a guaranteed QoS. Compare

with ABR, CBR, and UBR.

6 Enter the PCR/SCR/MBS values.

7 If your ISP uses DHCP to automatically assign IP addresses, check the

DHCP Client box.

8 Click Apply.

Dynamic/Fixed IP in 1483 Bridge Mode (For Multiple PCs)

Your ISP uses fixed/dynamic IP to provide the Internet connection. To

configure this function correctly, you should obtain the information on

this page from your ISP.

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CHAPTER 5: CONFIGURING THE ROUTER

Figure 42 Dynamic/Fixed IP for Bridge Mode Screen

After clicking Edit on the ATM PVC page, the ATM Interface page

appears.

1 Select Dynamic/Fixed IP for Bridge Mode from the Protocol drop-down

menu.

2 Enter the IP address, Subnet Mask and Default Gateway information

provided by your ISP into the IP address, Subnet Mask and ISP Default

Gateway fields.

3 Enter the VPI and VCI parameters provided to you by your ISP in the VPI

and VCI fields.

4 Select the encapsulation type (LLC or VC MUX) in the Encapsulation field.

This information will have been provided to you by your ISP.

5 Select the type of Quality of Service that you want from the QoS Class

drop-down menu.

■

CBR (constant bit rate): the CBR service class is intended for

real-time applications, for example, those requiring tightly

constrained delay and delay variation, such as voice and video

applications. The consistent availability of a fixed quantity of

bandwidth is considered appropriate for CBR service.

UBR (unspecified bit rate): the UBR service class is intended for

delay-tolerant or non-real-time applications, for example, those

which do not require tightly constrained delay and delay variation,

such as traditional computer communications applications. The

UBR service may be considered as "best effort service".

VBR (variable bit rate): QoS class defined by the ATM Forum for

ATM networks. VBR is subdivided into a real time (RT) class and

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Internet Settings

non-real time (NRT) class. VBR (RT) is used for connections in which

there is a fixed timing relationship between samples. VBR (NRT) is

used for connections in which there is no fixed timing relationship

between samples, but that still need a guaranteed QoS. Compare

with ABR, CBR, and UBR.

6 Enter the PCR/SCR/MBS values.

7 If your ISP uses DHCP to automatically assign IP addresses, check the

DHCP Client box.

8 Click Apply.

Disable

Selecting this option means that you do not want your Router to connect

to the Internet.

Figure 43 Disable Internet Connection Screen

DNS Domain Name Service (or Server), an Internet service that translates

domain names into IP addresses. Because domain names are alphabetic,

they're easier to remember. The Internet however, is really based on IP

addresses. Every time you use a domain name, a DNS service must

translate the name into the corresponding IP address. For example, the

domain name www.example.com might translate to 198.105.232.4.

Check with your ISP for information on this page.

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CHAPTER 5: CONFIGURING THE ROUTER

Figure 44 DNS Screen

If the DNS information is automatically provided by your ISP every time

you connect to it, check the Automatic from ISP box.

If your ISP provided you with specific DNS addresses to use, enter them

into the appropriate fields on this screen and click Apply.

Many ISPs do not require you to enter this information into the Router. If

you are using a Static IP connection type, you may need to enter a

specific DNS address and secondary DNS address for your connection to

work properly. If your connection type is Dynamic, PPPoA or PPPoE, it is

likely that you do not have to enter a DNS address.

Hostname & MAC To configure the Hostname and MAC Address information for your

Router, select Internet Settings, then from the sub-menu select Hostname

& MAC. The Hostname and MAC Address screen displays.

Figure 45 Hostname and MAC Address Screen

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Firewall

Some ISPs require a host name. If your ISP has this requirement, enter the

host name in the Host Name field.

1 Three different ways to configure this page:

■

If your ISP requires an assigned MAC address, enter the values for a

WAN MAC address

If the computer you are now using is the one that was previously

connected directly to the cable modem, select Clone

To reset the MAC Address to the default, select Reset MAC.

2 Click Apply to save the settings.

Firewall

From these pages, you can configure settings for the firewall.

Your Router is equipped with a firewall that will protect your network

from a wide array of common hacker attacks including Ping of Death

(PoD) and Denial of Service (DoS) attacks. You can turn the firewall

function off if needed. Turning off the firewall protection will not leave

your network completely vulnerable to hacker attacks, but 3Com

recommends that you leave the firewall enabled whenever possible.

Figure 46 Firewall Screen

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CHAPTER 5: CONFIGURING THE ROUTER

To enable the firewall function:

1 Select the level of protection (High Level, Medium Level, Low Level, or

Disable) that you desire from the Firewall Enable/Disable drop-down

menu.

2 Click Apply.

Special Applications Special Applications let you choose specific ports to be open for specific

applications to work properly with the Network Address Translation (NAT)

feature of the Router.

Figure 47 Special Applications Screen

A list of popular applications has been included to choose from. Select

your application from the Popular Applications drop-down list. Then

select the row that you want to copy the settings to from the Copy To

drop down list, and click Copy To. The settings will be transferred to the

row you specified. Click Apply to save the setting for that application.

If your application is not listed, you will need to check with the

application vendor to determine which ports need to be configured. You

can manually input this port information into the Router.

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Firewall

To manually enter the port information:

1 Specify the trigger port (the one used by the application when it is

initialized) in the Trigger Port column, and specify whether the trigger is

TCP or UDP.

2 Specify the Public Ports used by the application, that will need to be

opened up in the firewall for the application to work properly. Also

specify whether these ports are TCP or UDP.

3 Click Apply.

Virtual Servers The Virtual servers feature allows you to route external (Internet) calls for

services such as a web server (port 80), FTP server (Port 21), or other

applications through your Router to your internal network. Since your

internal computers are protected by a firewall, machines from the

Internet cannot get to them because they cannot be 'seen'.

If you need to configure the Virtual Server function for a specific

application, you will need to contact the application vendor to find out

which port settings you need.

The maximum number of virtual servers that can be configured is 20.

Figure 48 Virtual Servers Screen

To configure your virtual servers:

1 Click Add, or Edit if you want to edit an existing record.

2 Enter the IP address in the space provided for the internal machine.

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CHAPTER 5: CONFIGURING THE ROUTER

3 Enter the port type (TCP, UDP, or both TCP and UDP).

4 Specify the public port that will be seen by clients on the Internet, and the

LAN port which the traffic will be routed to.

5 You can enable or disable each Virtual Server entry by checking or

unchecking the appropriate Enable check box.

6 Click Apply to save the changes for each Virtual Server entry.

Client IP Filters The Router can be configured to restrict access to the Internet, e-mail or

other network services at specific days and times. Restriction can be set

for a single computer, a range of computers, or multiple computers.

Access Control

Access Control allows users to define the traffic type permitted or

not-permitted to the Internet.

Figure 49 Access Control Screen

This screen allows you to enable or disable all Access Control rules. Select

the appropriate Enable Filtering Function option, and click Apply to save

the settings.

To edit or delete specific existing Access Control rules, click on Edit or

Delete for the appropriate access control rule.

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Firewall

To configure new access control to specific Internet services:

1 Click on Add PC.

A screen similar to Figure 50 will appear.

Figure 50 Add PC Screen

2 Enter a description for the filter you are defining in the Client PC

Description field.

3 Enter the IP address or IP address range into the Client PC IP Address

fields.

4 Select the services to be blocked. A list of popular services is given on this

screen, to block a particular service place a check in the appropriate

Blocking check box.

If the service to be restricted is not listed on the screen, you can enter a

custom range of ports at the bottom of the page, under User Defined

Blocked Ports.

5 If you want the restriction to only apply at certain times, select the

schedule rule to apply from the Schedule Rule drop-down list.

Note that Schedule Rules are defined on the Schedule Rule page (see

page 64).

6 Click OK to add the settings.

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CHAPTER 5: CONFIGURING THE ROUTER

URL Filter

To configure the URL filter feature, use the table on the URL Filter page to

specify the Web sites (www.somesite.com) and/or keywords you want to

filter on your network.

For example, entering a keyword of xxx would block access to any URL

that contains the string xxx.

Figure 51 URL Filter Screen

To complete this configuration, you will need to create or modify an

access rule in the Access Control section (see “Access Control” on

page 60).

From the Access Control Add PC screen, (Figure 50) check the option:

Enable URL Filter, and Enable Content Filter, to filter out the Web sites

and keywords specified in the URL Filter page, and Content Filter page.

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Firewall

Content Filter

You can use the list on the Content Filter page to specify the type of

content that you want to filter out.

The Router comes with a 14-day free trial of the 3Com Content Filter

Service (3CSBCFS). To activate the 14-day free trial of the service, you

must first register your Router at www.3com.com. To continue using the

service after the trial period, you must purchase the 12-month

subscription license.

Figure 52 Content Filter Screen

To configure the Content Filter feature:

1 Select the server that you want to use from the Content Filter Server

drop-down menu. If the server you want to use is not listed, enter the

server address manually.

2 Define the time in the Server Timeout field (the default value is 3000ms).

If the Content Filter Server does not respond within this time period, the

Router will use the default content filter rule. The default rule is either

Allow or Deny None of the above (Uncategorized URL). You can configure

this rule at the bottom of the Content Filter page.

3 If you are not sure about your subscription status, click CHECK in

Subscription Filtering Status to find out if you have a current, valid

subscription.

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CHAPTER 5: CONFIGURING THE ROUTER

4 A list of categories is listed under Core Categories and Productivity

Categories. You can define what content should be viewed/blocked using

the Allow/Deny option. The Deny option is used to filter out the content

that contains the specific subject matter. Content with a specific subject

matter will not be filtered out if the Allow option is checked.

5 Click Apply for the changes to take effect.

Schedule Rule

The Router can be configured to restrict access to the Internet, e-mail or

other network services at specific days and times. These schedule rules

are used by the rules defined on the Access Control section of this screen

(see “Access Control” on page 60).

Figure 53 Schedule Rule Screen

To add a schedule rule:

1 Click Add Rule.

A screen similar to Figure 54 will appear.

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Firewall

Figure 54 Add Schedule Rule Screen

2 Enter a name and comment for the schedule rule in the Name and

Comment fields.

3 Specify the schedule rules for the required days and times - note that all

times should be in 24 hour format.

4 Click Apply.

MAC Address The MAC Address Filter is a powerful security feature that allows you to

Filtering specify which computers are allowed on the wireless network. Any

wireless computers attempting to access the network that are not

specified in the filter list will be denied access.

Figure 55 MAC Address Filtering Screen

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CHAPTER 5: CONFIGURING THE ROUTER

To enable the MAC Address Filtering feature:

1 Click Enable for the Enable MAC Address Filtering option.

2 In the Access Rule for registered MAC address option, select Allow or

Deny to determine the access rights for the list of addresses defined in

the MAC Address Filtering List.

3 To add entries to the MAC Address Filtering List:

■

Enter the MAC address of each client on your network to allow

network access

■

Copy the MAC address by selecting the name of the computer from

the DHCP Clients List, and then in the MAC Address Filtering List click

Copy To.

4 Click Apply to save the settings.

DMZ If you have a client PC that cannot run an Internet application properly

from behind the firewall, you can open the client up to unrestricted

two-way Internet access. This may be necessary if the NAT feature is

causing problems with an application such as a game or video

conferencing application.

Figure 56 DMZ Screen

Use this feature on a temporary basis. The computer in the DMZ is not

protected from hacker attacks.

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Firewall

To put a computer in the DMZ, enter the last digits of its LAN IP address in

the Static IP field. Put the IP address (if known) that will be accessing the

DMZ PC into the Public IP field, so that only the computer on the Internet

at this address can access this PC without firewall protection. If the IP

address is not known, or if more than one PC on the Internet will need to

access this PC, then set the Public IP to 0.0.0.0.

Click Apply.

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CHAPTER 5: CONFIGURING THE ROUTER

Advanced

From the Advanced screen, you can configure:

■

NAT (Network Address Translation)

Universal Plug and Play

WAN Ping Blocking

Remote Admin

Three sub-menu items can also be configures in this page:

■

Routing

DDNS

SNMP

Figure 57 Advanced Screen

NAT

■

NAT — Before you enable NAT (Network Address Translation), make

sure you have changed the administrator password. NAT is the

method by which the router shares the single IP address assigned by

your ISP with the computers on your network.

This function should only be disabled by advanced users, and if your

ISP assigns you multiple IP addresses or you need NAT disabled for an

advanced system configuration. If you have a single IP address and

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Advanced

you turn NAT off, the computers on your network will not be able to

access the Internet. Other problems may also occur.

■

IPSEC NAT-T Pass-through — NAT-T (NAT Traversal) is an Internet Draft

proposed to IETF in order to help the problems associated with passing

IPsec traffic through NAT Routers. For NAT-T to work, both ends of the

connection need to support this function.

Ensure that you select NAT-T only if it is needed as it will reduce

LAN-WAN throughput. The ADSL Wireless 11g Firewall Router

supports NAT-T draft 2 implementation.

Universal Plug and Play

Universal Plug and Play is a technology that offers seamless operation of

voice messaging, video messaging, games, and other applications that

are Universal Plug and Play compliant. Some applications require the

Router's firewall to be configured in a specific way to operate properly.

This usually requires opening TCP and UDP ports and in some instances

setting trigger ports. An application that is Universal Plug and Play

compliant has the ability to communicate with the Router, basically

"telling" the Router which way it needs the firewall configured. The

Router ships with the Universal Plug and Play feature disabled. If you are

using any applications that are Universal Plug and Play compliant, and

want to take advantage of the Universal Plug and Play features, you can

enable this feature. Simply select On in the Universal Plug and Play

section of the Utilities page. Click Apply to save the change.

WAN Ping Blocking

Computer hackers use what is known as "Pinging" to find potential

victims on the Internet. By pinging a specific IP address and receiving a

response from the IP address, a hacker can determine that something of

interest might be there.

The Router can be set up so it will not respond to an ICMP Ping from the

outside. This heightens the level of security of your Router.

To turn off the ping response, select Block ICMP Ping and click Apply; the

router will not respond to an ICMP ping from the Internet.

Remote Administration

Before you enable this function, ensure that you have set the

Administration Password.

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CHAPTER 5: CONFIGURING THE ROUTER

Remote Administration allows you to make changes to your Router’s

settings from anywhere on the Internet. You can choose to either:

■

Click the check box to enable any PC on the network to remotely

manage your Router.

■

Enter one specific IP address that can remotely manage your router.

This is more secure, as only the specified IP address will be able to

manage the Router.

Routing Three tabs are presented in the Routing screen:

■

Routing

■

RIP (Routing Information Protocol) — RIP allows the network

administrator to set up routing information on one RIP-enabled device

and send that information to all RIP-enabled devices on the network

■

Routing table

Routing

Figure 58 Routing Parameter Screen

The Routing parameter screen shows a list of current static route entries.

For each entry, the following information is displayed:

■

Index — the index of the entry.

Network Address — the network address of the route.

Subnet Mask — the subnet mask of the route.

A network address of 0.0.0.0 and a subnet mask of 0.0.0.0 indicates the

default route.

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Advanced

■

Gateway — the router used to route data to the network specified by

the network address.

To add a static route entry to the table, click Add and on the screen that

appears type in the network address, subnet mask and router. To change

an entry, click Edit and to delete an entry, click Delete. After you have

finished making changes to the table, click Apply.

RIP Parameters

Figure 59 RIP Parameter Screen

You can set up RIP independently on both LAN and WAN interfaces.

1 Select the RIP Mode Enable option.

2 Select the appropriate option to enable or disable Auto Summary. Auto

Summarization sends simplified routing data to other RIP-enabled devices

rather than full routing data.

3 Select the Operation Mode:

■

Disabled — RIP is not enabled for the WAN or LAN interface.

■

Enabled — RIP is enabled for the WAN or LAN interface. The router

will transmit RIP update information to other RIP-enabled devices.

■

Silent — RIP is enabled, however the router only receives RIP update

messages, it will not transmit any messages itself.

4 In the Version field, select RIPv1 or RIPv2.

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CHAPTER 5: CONFIGURING THE ROUTER

3Com recommends that you only use RIPv1 if there is an existing

RIP-enabled device on your network that does not support RIPv2. In all

other cases, you should use RIPv2.

5 Use the Poison Reverse drop-down list to enable or disable Poison Reverse

on the router. Enabling Poison Reverse on your Router allows it to

indicate to other RIP-enabled devices that they have both routes that

point to each other, preventing data loops.

6 Use the Authentication Required field to choose one of three modes of

authentication:

■

None — Switches off authentication on the specified interface.

■

Password — An unencrypted text password that needs to be set on all

RIP-enabled devices connected to this router. RIP information is not

shared between devices whose passwords do not match.

7 In the Authentication Code field, enter the password that is required if

the Password option has been selected.

8 Click Apply.

Routing Table

The Routing Table screen displays details for the default routing used by

your Router and any routing created using Static Routing or RIP.

Figure 60 Routing Table Screen

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Advanced

DDNS The Router provides a list of dynamic DNS providers for you to choose

from. Dynamic Domain Name Server (DDNS) enables you to map a static

domain name to a dynamic IP address. The Router supports two DDNS

providers: TZO.com and DYNDNS. Before you set up DDNS, you must

obtain an account, password and static domain name from your DDNS

provider. DDNS is disabled by default.

Figure 61 Dynamic Domain Server (DDNS) Screen

To set up Dynamic DNS:

1 Select the Dynamic DNS Enable option.

2 Select a DDNS Service Provider from the drop-down list.

TZO.com

If you select TZO.com:

1 In the Domain Name text box, enter the domain name.

2 In the E-mail text box, enter the account name.

3 In the Key text box, enter the account password.

4 Click Apply to make this service active.

DynDNS

If you select DynDNS.org:

1 In the Domain Name text box, enter the domain name.

2 In the Account text box, enter the account name.

3 In the Password text box, enter the account password.

4 Click Apply to make this service active.

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CHAPTER 5: CONFIGURING THE ROUTER

SNMP SNMP (Simple Network Management Protocol) allows remote

management of your router by a PC that has an SNMP management

agent installed.

SNMP Community

Figure 62 SNMP Screen

To Configure SNMP:

1 In the Community column, enter the name of the SNMP communication

channel. Your SNMP management agent needs to be configured with this

name so that it can communicate with your router.

2 In the Access column, select Read to allow the management agent to

collect data (for example, bandwidth usage) from your router. Select

Write to allow the management agent to change the configuration of

your router.

3 Check the appropriate Valid check box to enable the communication

channel.

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System Tools

SNMP Trap

You can configure your router to send status messages to the SNMP

management agent if a problem occurs on the network. To configure

traps:

1 In the IP Address field, enter the IP address of the PC to which you want

your router to send status messages.

2 In the Community field, enter the name of the SNMP communication

channel to which you want your router to send status messages.

3 Set the Version field to match the version of trap messaging that your

SNMP management agent supports. The router supports V1 and V2c trap

messaging.

System Tools

These pages lets you manage different parameters of the router and

perform certain administrative functions.

Restart Router Sometimes it may be necessary to restart (or reboot) the Router.

Restarting the Router will not delete any of your configuration settings.

Figure 63 Restart Router Screen

Click Restart to restart the Router.

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CHAPTER 5: CONFIGURING THE ROUTER

Reset to Factory Figure 64 Reset to Factory Default Screen

Default

Using this option will reset all of the settings in the Router to the factory

(default) settings. It is recommended that you backup your settings

before you restore all of the defaults. To restore the factory default

settings, click Reset.

Backup/Restore Figure 65 Backup/Restore Settings Screen

Settings

You can save your current configuration by clicking Save in Backup

Settings. Saving your configuration will allow you to restore it later if your

settings are lost or changed. It is recommended that you backup your

current configuration before performing a firmware update.

The Restore Settings option will allow you to restore a previously saved

configuration. Please select the configuration file using the Browse

button and click Restore.

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System Tools

Upgrade From time to time 3Com may release new versions of the Router’s

firmware. Firmware updates contain improvements and fixes to problems

that may have existed.

Figure 66 Upgrade Screen

Please download the firmware file to your PC first, and then click Browse

and select the firmware file. Click Upgrade to upload the firmware to the

Router.

Admin Password The Router ships with a default password of admin. 3Com recommends

that you change the password for added security. Keep your password in

a safe place as you will need this password to log into the router in the

future. It is also recommended that you set a password if you plan to use

the Remote management feature of this Router.

Figure 67 Admin Password Screen

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CHAPTER 5: CONFIGURING THE ROUTER

To change the password:

1 Enter the current password into the Current Password field.

2 Enter the new password into the New Password and Confirm new

Password fields.

3 Click Apply.

The login timeout option allows you to set the period of time that you

can be logged into the Router's setup interface. The timer starts when

there is no activity. For example, you have made some changes in the

setup interface, then left your computer alone without clicking "Logout".

Assuming the timeout is set to 5 minutes, then 5 minutes after you leave,

the login session will expire. You will have to login to the router again to

make any more changes. The login timeout option is for security

purposes and the default is set to 5 minutes. As a note, only one

computer can be logged into the Router's web management interface at

one time.

Time and Time Zone You can set the time settings for the Router in this page.

Figure 68 Time and Time Zone Screen

The Router keeps time by connecting to a Simple Network Time Protocol

(SNTP) server. This allows the Router to synchronize the system clock to

the Internet. The synchronized clock in the Router is used to record the

security log and control client filtering. Select the time zone that you

reside in. If you reside in an area that observes Daylight Saving, then place

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System Tools

a checkmark in the box next to Enable Daylight Saving. The system clock

may not update immediately. Allow at least 15 minutes for the router to

contact the time servers on the Internet and get a response. You cannot

set the clock yourself.

You can specify which SNTP servers the Router will use to update it’s

system clock, although doing this should only be necessary if you are

experiencing difficulty.

Syslog Server Using third party syslog software, this Syslog Server tool will automatically

download the Router log to the specified server IP address.

Figure 69 Syslog Server Screen

1 Check Enable to use this function.

2 Enter the server IP address in the Server LAN IP Address field.

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CHAPTER 5: CONFIGURING THE ROUTER

Status and Logs

You can use the Status Screen to view version numbers for your router’s

software and hardware and check the status of connections to WAN,

LAN and WLAN interfaces.

Status Figure 70 Status Screen

This screen shows Router status and statistics.

ADSL Status Figure 71 ADSL Status Screen

This screen shows ADSL modem status and statistics.

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Status and Logs

ATM PVC Status Figure 72 ATM PVC Status Screen

This screen shows ATM PVC status and statistics.

■

Click Disconnect to disconnect from your ISP.

Click Connect to connect to your ISP.

Logs Figure 73 Logs Screen

This screen shows any attempts that have been made to gain access to

your network as well as the system activities.

■

Click Refresh to update the display.

Click Clear to clear the log (note that all current entries will be erased).

Click Save to save the log to disk in a text file. When prompted for a

location to save the file to, specify a filename and location, and then

click OK.

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CHAPTER 5: CONFIGURING THE ROUTER

Support/Feedback

You can use the Support/Feedback screen to obtain support and help.

Support Figure 74 Support Screen

This screen shows support information.

Feedback To provide feedback to 3Com, please click Provide Feedback, and this will

connect you to 3Com Web site.

Figure 75 Feedback Screen

This screen shows feedback information.

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TROUBLESHOOTING

Basic Connection

Checks

■

Check that the Router is connected to your computers and to the

telephone line, and that all the equipment is powered on. Check that

the LAN Status and SYNC LEDs on the Router are illuminated, and that

any corresponding LEDs on the NIC are also illuminated.

■

Ensure that the computers have completed their start-up procedure

and are ready for use. Some network interfaces may not be correctly

initialized until the start-up procedure has completed.

If the link status LED does not illuminate for a port that is connected,

check that you do not have a faulty cable. Try a different cable.

Browsing to the

Router

If you have connected your Router and computers together but cannot

browse to the Router configuration screens, check the following:

Configuration

Screens

■

Confirm that the physical connection between your computer and the

Router is OK, and that the LAN Status LEDs on the Router and

network adapter are illuminated and indicating the same speed

(10Mbps or 100Mbps). Some NICs do not have status LEDs, in which

case a diagnostic program may be available that can give you this

information.

■

Ensure that you have configured your computer as described in

Chapter 3. Restart your computer while it is connected to the Router

to ensure that your computer receives an IP address.

When entering the address of the Router into your web browser,

ensure that you use the full URL including the http:// prefix (e.g.

http://192.168.1.1).

Ensure that you do not have a Web proxy enabled on your computer.

Go to the Control Panel and click on Internet Options. Select the

Connections tab and click on the LAN Settings button at the bottom.

Make sure that the Proxy Server option is unchecked.

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CHAPTER 6: TROUBLESHOOTING

■

If you cannot browse to the Router, use the winipcfg utility in

Windows 95/98/ME to verify that your computer has received the

correct address information from the Router. From the Start menu,

choose Run and then enter winipcfg. Check that the computer has

an IP address of the form 192.168.1.xxx (where xxx is in the range

2-254), the subnet mask is 255.255.255.0, and the default Router is

192.168.1.1 (the address of the Router). If these are not correct, use

the Release and Renew functions to obtain a new IP address from the

Router. Under Windows 2000 and Windows XP, use the ipconfig

command-line utility to perform the same functions.

Connecting to the

Internet

If you can browse to the Router configuration screens but cannot access

sites on the Internet, check the following:

■

Confirm that the physical connection between the Router and the

telephone line is OK, and that the DSL LED on the Router is

illuminated.

■

Ensure that you have entered the correct information into the Router

configuration screens as required by your Internet Service Provider. Use

the Internet Settings screen to verify this.

■

Check that the PPPoE or PPPoA user name and password are correct.

Ensure that your computers are not configured to use a Web proxy.

On Windows computers, this can be found under Control Panel >

Internet Options > Connections.

ForgottenPassword If you can browse to the Router configuration screen but cannot log on

and Reset to

Factory Defaults

because you do not know or have forgotten the password, follow the

steps below to reset the Router to its factory default configuration.

CAUTION: All your configuration changes will be lost, and you will need

to run the configuration wizard again before you can re-establish your

Router connection to the Internet. Also, other computer users will lose

their network connections whilst this process is taking place, so choose a

time when this would be convenient.

1 Power off the Router.

2 Disconnect all your computers and the telephone line from the Router.

3 Re-apply power to the Router, and wait for it to finish booting up.

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Wireless Networking

4 Press and hold the Reset button on the rear panel (see “Rear Panel” on

page 13) for 5 seconds.

5 The Router will restart, and when the start-up sequence has completed,

browse to:

http://192.168.1.1

and run the configuration wizard. You may need to restart your computer

before you attempt this.

6 When the configuration wizard has completed, you may reconnect your

network as it was before.

Wireless

Networking

■

Ensure that you have an 802.11b or 802.11g wireless adapter for

each wireless computer, and that it is correctly installed and

configured. Verify that each Wireless computer has either Windows

95 or higher or MAC OS 8.5 or higher.

■

Verify that your wireless computers are configured to work in

Infrastructure mode and not Ad Hoc mode. The Router contains an

Access Point that is designed to operate in Infrastructure mode. Ad

Hoc mode is not supported by the Route r.

■

If you have a wired and a wireless NIC in the same computer, ensure

that the wired NIC is disabled.

Check the status of the WLAN LED, it should be lit if wireless is

enabled and will flash when there is wireless activity. If not lit go to

“Wireless Settings” on page 39 and enable wireless networking.

■

Ensure that the TCP/IP settings for all devices are correct.

Ensure that the Wireless Clients are using the same SSID or Service

Area Name as the Router. The SSID is case-sensitive

■

Ensure that the encryption method and level that you use on your

clients are the same as those configured on the Router. The Router

cannot simultaneously support WPA and WEP encryption.

Ensure that you have the Wireless computer enabled in the list of

allowed MAC addresses if you are using MAC Address Filtering on the

Router.

If you are having difficulty connecting or are operating at a low speed

try changing the antenna positions on the rear of the Router. For more

effective coverage you can try reorientating your antennae. Place one

antenna vertically and one horizontally to improve coverage.

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CHAPTER 6: TROUBLESHOOTING

Additionally consider moving the wireless computer closer to the

Router to confirm that the building structure or fittings are not

adversely affecting the connectivity. If this resolves the problem

consider relocating the Wireless computer or the Router, or trying a

different channel on the Router.

■

Sources of interference: The 2.4Ghz ISM band is used for 802.11b and

802.11g. This is generally a licence free band for low power

applications, and you may have other devices at your location that

operate in this frequency band. You should take care to ensure that

there are no devices like microwave ovens for example close to the

Router or wireless computers as this could affect receiver sensitivity

and reduce the performance of your network. If you are unsure try

relocating both the wireless computers and the Router to establish

whether this problem exists.

■

Most wireless computer Adapters will scan the channels for the

wireless Router. If a wireless computer has not located the Router then

try initiating a search manually if the client software supports this

feature or manually set the channel on your wireless computer to

correspond to the Router channel number. Please refer to your

Wireless computer adapter documentation and vendor to do this.

■

Speed of connection: The 802.11b and 802.11g standards will

automatically choose the best speed depending on the quality of your

connection. As the signal quality weakens then the speed falls back to

a lower speed. The speeds supported by 802.11g are 54 Mbps,

48 Mbps, 36 Mbps, 24 Mbps, 18 Mbps, 12 Mbps, and 6 Mbps. The

speeds supported by 802.11b are 11 Mbps, 5.5 Mbps, 2 Mbps and

1 Mbps. In general the closer you are to the Router the better the

speed. If you are not achieving the speed you had anticipated then try

moving the antenna on the Router or moving the Wireless computer

closer to the Router. In an ideal network the Router should be located

in the centre of the network with Wireless computers distributed

around it. Applications are generally available with the computer

wireless card to carry out a site survey. Use this application to find the

optimal siting for your wireless computer. Consult your Computer

Card documentation and vendor for more details.

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Recovering from Corrupted Software

Recovering from

If the system software has become corrupted, the Router will enter a

Corrupted Software “recovery” state; DHCP is enabled, and the LAN IP address is set to

192.168.1.1. Follow the instructions below to upload a new copy of the

system software to a Router unit in this state.

Ensure that one of your computers has a copy of the new software image

file stored on its hard disk or available on CD-ROM.

The latest software is available on 3Com’s Web site at:

www.3com.com

1 Remove power from the Router and disconnect the telephone line and all

your computers, except for the one computer with the software image.

2 You will need to reconfigure this computer to obtain an IP address

automatically (see “Obtaining an IP Address Automatically” on page 21)

3 Restart the computer, and re-apply power to the Router.

4 Using the Web browser on the computer, enter the following URL in the

location bar:

http://192.168.1.1.

This will connect you to the Recovery utility in the Router.

5 Follow the on-screen instructions. Enter the path and filename of the

software image file.

6 When the upload has completed, the Router will restart, run the self-test

and, if successful, resume normal operation.

7 Refer to the Installation Guide to reconnect your Router to the telephone

line and the computers in your network. Do not forget to reconfigure the

computer you used for the software upload.

If the Router does not resume normal operation following the upload, it

may be faulty. Contact your supplier for advice.

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CHAPTER 6: TROUBLESHOOTING

Frequently Asked

Questions

How do I reset the Router to Factory Defaults?

See “Forgotten Password and Reset to Factory Defaults” on

page 84.

How many computers on the LAN does the Router support?

A maximum of 253 computers on the LAN are supported.

How many wireless clients does the Router support?

A maximum of 128 wireless clients are supported.

There are only 4 LAN ports on the Router. How are additional

computers connected?

You can expand the number of connections available on your LAN

by using hubs, switches and wireless access points connected to

the Router. 3Com wireless access points and hubs and switches

provide a simple, reliable means of expanding your network;

contact your supplier for more information, or visit:

http://www.3com.com/

Does the Router support virtual private networks (VPNs)?

The Router supports VPN passthrough, which allows VPN clients on

the LAN to communicate with VPN hosts on the Internet. It is also

possible to set up VPN hosts on your LAN that clients elsewhere on

the Internet can connect to, but this is not a recommended

configuration.

Where can I download software updates for the Router?

Updates to the Router software are posted on the 3Com support

web site, accessible by visiting:

http://www.3com.com

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IP ADDRESSING

The Internet

Protocol Suite

The Internet protocol suite consists of a well-defined set of

communications protocols and several standard application protocols.

Transmission Control Protocol/Internet Protocol (TCP/IP) is probably the

most widely known and is a combination of two of the protocols (IP and

TCP) working together. TCP/IP is an internationally adopted and

supported networking standard that provides connectivity between

equipment from many vendors over a wide variety of networking

technologies.

Managing the

Router over the

Network

To manage a device over the network, the Router must be correctly

configured with the following IP information:

■

An IP address

■

A Subnet Mask

IP Addresses and Each device on your network must have a unique IP address to operate

Subnet Masks correctly. An IP address identifies the address of the device to which data

is being sent and the address of the destination network. IP addresses

have the format n.n.n.x where n is a decimal number between 0 and 255

and x is a number between 1 and 254 inclusive.

However, an IP Address alone is not enough to make your device operate.

In addition to the IP address, you need to set a subnet mask. All networks

are divided into smaller sub-networks and a subnet mask is a number

that enables a device to identify the sub-network to which it is

connected.

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APPENDIX A: IP ADDRESSING

For your network to work correctly, all devices on the network must have:

■

The same sub-network address.

The same subnet mask.

■

The only value that will be different is the specific host device number.

This value must always be unique.

An example IP address is ‘192.168.100.8’. However, the size of the

network determines the structure of this IP Address. In using the Router,

you will probably only encounter two types of IP Address and subnet

mask structures.

Type One

In a small network, the IP address of ‘192.168.100.8’ is split into two

parts:

■

Part one (‘192.168.100’) identifies the network on which the device

resides.

■

Part two (‘.8’) identifies the device within the network.

This type of IP Address operates on a subnet mask of ‘255.255.255.0’.

See Table 3 for an example about how a network with three computers

and a Router might be configured.

Table 3 IP Addressing and Subnet Masking

Device

PC 1

IP Address

Subnet Mask

255.255.255.0

192.168.100.8

192.168.100.33

192.168.100.188

192.168.100.72

PC 2

PC 3

Router

Type Two

In larger networks, where there are more devices, the IP address of

‘192.168.100.8’ is, again, split into two parts but is structured differently:

■

Part one (‘192.168’) identifies the network on which the device

resides.

■

Part two (‘.100.8’) identifies the device within the network.

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How does a Device Obtain an IP Address and Subnet Mask?

This type of IP Address operates on a subnet mask of ‘255.255.0.0’.

See Table 4 for an example about how a network (only four computers

represented) and a Router might be configured.

Table 4 IP Addressing and Subnet Masking

Device

PC 1

IP Address

Subnet Mask

255.255.0.0

192.168.100.8

192.168.201.30

192.168.113.155

192.168.002.230

192.168.002.72

PC 2

PC 3

PC 4

Router

How does a Device

Obtain an IP

There are three different ways to obtain an IP address and the subnet

mask. These are:

Address and Subnet

Mask?

■

Dynamic Host Configuration Protocol (DHCP) Addressing

Static Addressing

Automatic Addressing (Auto-IP Addressing)

DHCP Addressing The Router contains a DHCP server, which allows computers on your

network to obtain an IP address and subnet mask automatically. DHCP

assigns a temporary IP address and subnet mask which gets reallocated

once you disconnect from the network.

DHCP will work on any client Operating System such as Windows^®95,

Windows 98 or Windows NT 4.0. Also, using DHCP means that the same

IP address and subnet mask will never be duplicated for devices on the

network. DHCP is particularly useful for networks with large numbers of

users on them.

Static Addressing You must enter an IP Address and the subnet mask manually on every

device. Using a static IP and subnet mask means the address is

permanently fixed.

Auto-IP Addressing Network devices use automatic IP addressing if they are configured to

acquire an address using DHCP but are unable to contact a DHCP server.

Automatic IP addressing is a scheme where devices allocate themselves

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APPENDIX A: IP ADDRESSING

an IP address at random from the industry standard subnet of

169.254.x.x (with a subnet mask of 255.255.0.0). If two devices allocate

themselves the same address, the conflict is detected and one of the

devices allocates itself a new address.

Automatic IP addressing support was introduced by Microsoft in the

Windows 98 operating system and is also supported in Windows 2000.

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TECHNICAL SPECIFICATIONS

This section lists the technical specifications for the OfficeConnect ADSL

Wireless 11g Firewall Router.

OfficeConnectADSL Interfaces

Wireless 11g

DSL connection

Firewall Router

LAN connection — four 10Mbps/100Mbps dual speed Ethernet ports

(10BASE-T/100BASE-TX)

WLAN Interfaces

Standard IEEE 802.11g, Direct Sequence Spread Spectrum (DSSS)

Transmission rate: 54Mbps, automatic fallback to 48, 36, 24, 18, 12, or

6 Mbps

Maximum channels: 14

Range up to 304.8m (1000ft)

Frequency: (US/Canada/Europe) 2.400-2.4835 GHz

Sensitivity: 6, 12, 18, 24, 36, 48 Mbps: -85 dBm;

54 Mbps -66 dBm typical

Modulation: CCK, BPSK, QPSK, OFDM

Encryption: 40/64 bit WEP, 128 bit WEP, WPA

Maximum clients: 128

O/P Power: 18dBm

Standard IEEE 802.11b, Direct Sequence Spread Spectrum (DSSS)

Transmission rate: 11bps, automatic fallback to 5.5, 2, or 1 Mbps

Maximum channels: 14

Range up to 304.8m (1000ft)

Frequency: (US/Canada/Europe) 2.400-2.4835 GHz

Sensitivity: 1, 2, 5.5 Mbps: -85 dBm; 11 Mbps -82 dBm typical

Modulation: CCK, BPSK, QPSK

Encryption: 40/64 bit WEP, 128 bit WEP, WPA

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APPENDIX B: TECHNICAL SPECIFICATIONS

Maximum clients: 128

O/P Power 16dBm

Operating Temperature

0 °C to 40 °C (32 °F to 105 °F)

Power

8VA, 25 BThU/hr

Humidity

0% to 90% (non-condensing) humidity

Dimensions

■

Width = 220 mm (8.7 in.)

Depth = 133 mm (5.2 in.)

Height = 38 mm (1.5 in.)

Weight

Approximately 550 g (1.1 lbs)

Standards Functional:

ISO 8802/3

IEEE 802.3

IEEE 802.11b, 802.11g

Safety:

EMC:

EN 60950

EN 55022 Class B

EN 55024

FCC Part 15 Class B*

ETSI EN 301 489–17

Radio

ETS 300 328 (2.4 GHz ISM band wide band transmission

systems.

Environmental: EN 60068 (IEC 68)

*See “Regulatory Notices” for conditions of operation.

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OfficeConnect ADSL Wireless 11g Firewall Router

System Requirements Operating Systems

The Router will support the following Operating Systems:

■

Windows 95/98

Windows NT 4.0

Windows ME

Windows 2000

Windows XP

Mac OS 8.5 or higher

Unix

Ethernet Performance The Router complies to the IEEE 802.3i, u and x specifications.

Cable Specifications The Router supports the following cable types and maximum lengths:

■

Category 3 (Ethernet) or Category 5 (Fast Ethernet or Dual Speed

Ethernet) Twisted Pair — shielded and unshielded cable types.

■

Maximum cable length of 100m (327.86 ft).

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APPENDIX B: TECHNICAL SPECIFICATIONS

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SAFETY INFORMATION

Important Safety

Information

WARNING: Warnings contain directions that you must follow for your

personal safety. Follow all directions carefully.

You must read the following safety information carefully before you

install or remove the unit:

WARNING: The Router generates and uses radio frequency (rf) energy. In

some environments, the use of rf energy is not permitted. The user

should seek local advice on whether or not rf energy is permitted within

the area of intended use.

WARNING: Exceptional care must be taken during installation and

removal of the unit.

WARNING: To ensure compliance with international safety standards,

only use the power adapter that is supplied with the unit.

WARNING: The socket outlet must be near to the unit and easily

accessible. You can only remove power from the unit by disconnecting

the power cord from the outlet.

WARNING: This unit operates under SELV (Safety Extra Low Voltage)

conditions according to IEC 60950. The conditions are only maintained

if the equipment to which it is connected also operates under SELV

conditions.

WARNING: There are no user-replaceable fuses or user-serviceable

parts inside the Router. If you have a physical problem with the unit

that cannot be solved with problem solving actions in this guide,

contact your supplier.

WARNING: Disconnect the power adapter before moving the unit.

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APPENDIX C: SAFETY INFORMATION

WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They

cannot be used as telephone sockets. Only connect RJ-45 data

connectors to these sockets.

Wichtige

Sicherheitshinweise

VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer

eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig

zu befolgen.

Sie müssen die folgenden Sicherheitsinformationen sorgfältig

durchlesen, bevor Sie das Geräts installieren oder ausbauen:

VORSICHT: Der Router erzeugt und verwendet Funkfrequenz (RF). In

manchen Umgebungen ist die Verwendung von Funkfrequenz nicht

gestattet. Erkundigen Sie sich bei den zuständigen Stellen, ob die

Verwendung von Funkfrequenz in dem Bereich, in dem der Bluetooth

Access Point eingesetzt werden soll, erlaubt ist.

VORSICHT: Bei der Installation und beim Ausbau des Geräts ist mit

höchster Vorsicht vorzugehen.

VORSICHT: Aufgrund von internationalen Sicherheitsnormen darf das

Gerät nur mit dem mitgelieferten Netzadapter verwendet werden.

VORSICHT: Die Netzsteckdose muß in der Nähe des Geräts und leicht

zugänglich sein. Die Stromversorgung des Geräts kann nur durch

Herausziehen des Gerätenetzkabels aus der Netzsteckdose

unterbrochen werden.

VORSICHT: Der Betrieb dieses Geräts erfolgt unter den

SELV-Bedingungen (Sicherheitskleinstspannung) gemäß IEC 60950.

Diese Bedingungen sind nur gegeben, wenn auch die an das Gerät

angeschlossenen Geräte unter SELV-Bedingungen betrieben werden.

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VORSICHT: Es sind keine von dem Benutzer zu ersetzende oder zu

wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit

dem Router haben, das nicht mittels der Fehleranalyse in dieser

Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten

in Verbindung.

VORSICHT: Vor dem Ausbau des Geräts das Netzadapterkabel

herausziehen.

VORSICHT: RJ-45-Anschlüsse. Dies sind abgeschirmte

RJ-45-Datenbuchsen. Sie können nicht als Telefonanschlußbuchsen

verwendet werden. An diesen Buchsen dürfen nur RJ-45-Datenstecker

angeschlossen werden.

Consignes

importantes de

sécurité

AVERTISSEMENT: Les avertissements présentent des consignes que

vous devez respecter pour garantir votre sécurité personnelle. Vous

devez respecter attentivement toutes les consignes.

Nous vous demandons de lire attentivement les consignes suivantes de

sécurité avant d’installer ou de retirer l’appareil:

AVERTISSEMENT: La Router fournit et utilise de l'énergie

radioélectrique (radio fréquence -rf). L'utilisation de l'énergie

radioélectrique est interdite dans certains environnements. L'utilisateur

devra se renseigner sur l'autorisation de cette énergie dans la zone

prévue.

AVERTISSEMENT: Faites très attention lors de l'installation et de la

dépose du groupe.

AVERTISSEMENT: Pour garantir le respect des normes internationales

de sécurité, utilisez uniquement l'adaptateur électrique remis avec cet

appareil.

AVERTISSEMENT: La prise secteur doit se trouver à proximité de

l’appareil et son accès doit être facile. Vous ne pouvez mettre l’appareil

hors circuit qu'en débranchant son cordon électrique au niveau de

cette prise.

AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement

basse de sécurité qui est conforme à la norme CEI 60950. Ces

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100

APPENDIX C: SAFETY INFORMATION

conditions ne sont maintenues que si l'équipement auquel il est

raccordé fonctionne dans les mêmes conditions.

AVERTISSEMENT: Il n’y a pas de parties remplaceables par les

utilisateurs ou entretenues par les utilisateurs à l’intérieur du moyeu. Si

vous avez un problème physique avec le moyeu qui ne peut pas être

résolu avec les actions de la résolution des problèmes dans ce guide,

contacter votre fournisseur.

AVERTISSEMENT: Débranchez l'adaptateur électrique avant de retirer

cet appareil.

AVERTISSEMENT: Ports RJ-45. Il s'agit de prises femelles blindées de

données RJ-45. Vous ne pouvez pas les utiliser comme prise de

téléphone. Branchez uniquement des connecteurs de données RJ-45 sur

ces prises femelles.

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END USER SOFTWARE LICENSE

AGREEMENT

3Com Corporation

END USER SOFTWARE LICENSE AGREEMENT

YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE DOWNLOADING, INSTALLING AND USING THIS

PRODUCT, THE USE OF WHICH IS LICENSED BY 3COM CORPORATION ("3COM") TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH

BELOW. DOWNLOADING, INSTALLING OR OTHERWISE USING ANY PART OF THE SOFTWARE OR DOCUMENTATION INDICATES THAT YOU

ACCEPT THESE TERMS AND CONDITIONS. IF YOU DO NOT AGREE TO THE TERMS AND CONDITIONS OF THIS AGREEMENT, DO NOT

DOWNLOAD, INSTALL OR OTHERWISE USE THE SOFTWARE OR DOCUMENTATION, DO NOT CLICK ON THE "I AGREE" OR SIMILAR BUTTON.

AND IF YOU HAVE RECEIVED THE SOFTWARE AND DOCUMENTATION ON PHYSICAL MEDIA, RETURN THE ENTIRE PRODUCT WITH THE

SOFTWARE AND DOCUMENTATION UNUSED TO THE SUPPLIER WHERE YOU OBTAINED IT.

LICENSE: 3Com grants you a nonexclusive, nontransferable (except as specified herein) license to use the accompanying software program(s) in

executable form (the "Software") and accompanying documentation (the "Documentation"), subject to the terms and restrictions set forth in this

Agreement. You are not permitted to lease, rent, distribute or sublicense (except as specified herein) the Software or Documentation or to use the

Software or Documentation in a time-sharing arrangement or in any other unauthorized manner. Further, no license is granted to you in the human

readable code of the Software (source code). Except as provided below, this Agreement does not grant you any rights to patents, copyrights, trade

secrets, trademarks, or any other rights with respect to the Software or Documentation.

Subject to the restrictions set forth herein, the Software is licensed to be used on any workstation or any network server owned by or leased to you, for

your internal use, provided that the Software is used only in connection with this 3Com product. You may reproduce and provide one (1) copy of the

Software and Documentation for each such workstation or network server on which the Software is used as permitted hereunder. Otherwise, the

Software and Documentation may be copied only as essential for backup or archive purposes in support of your use of the Software as permitted

hereunder. Each copy of the Software and Documentation must contain 3Com's and its licensors' proprietary rights and copyright notices in the same

form as on the original. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation delivered to

you under this Agreement.

ASSIGNMENT; NO REVERSE ENGINEERING: You may transfer the Software, Documentation and the licenses granted herein to another party in the

same country in which you obtained the Software and Documentation if the other party agrees in writing to accept and be bound by the terms and

conditions of this Agreement. If you transfer the Software and Documentation, you must at the same time either transfer all copies of the Software and

Documentation to the party or you must destroy any copies not transferred. Except as set forth above, you may not assign or transfer your rights under

this Agreement.

Modification, reverse engineering, reverse compiling, or disassembly of the Software is expressly prohibited. However, if you are a European Union

("EU") resident, information necessary to achieve interoperability of the Software with other programs within the meaning of the EU Directive on the

Legal Protection of Computer Programs is available to you from 3Com upon written request.

EXPORT RESTRICTIONS: The Software, including the Documentation and all related technical data (and any copies thereof) (collectively "Technical

Data"), is subject to United States Export control laws and may be subject to export or import regulations in other countries. In addition, the Technical

Data covered by this Agreement may contain data encryption code which is unlawful to export or transfer from the United States or country where you

legally obtained it without an approved U.S. Department of Commerce export license and appropriate foreign export or import license, as required. You

agree that you will not export or re-export the Technical Data (or any copies thereof) or any products utilizing the Technical Data in violation of any

applicable laws or regulations of the United States or the country where you legally obtained it. You are responsible for obtaining any licenses to export,

re-export or import the Technical Data.

In addition to the above, the Product may not be used, exported or re-exported (i) into or to a national or resident of any country to which the U.S. has

embargoed; or (ii) to any one on the U.S. Commerce Department's Table of Denial Orders or the U.S. Treasury Department's list of Specially Designated

Nationals.

TRADE SECRETS; TITLE: You acknowledge and agree that the structure, sequence and organization of the Software are the valuable trade secrets of

3Com and its suppliers. You agree to hold such trade secrets in confidence. You further acknowledge and agree that ownership of, and title to, the

Software and Documentation and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers.

UNITED STATES GOVERNMENT LEGENDS: The Software, Documentation and any other technical data provided hereunder is commercial in nature

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102

APPENDIX D: END USER SOFTWARE LICENSE AGREEMENT

and developed solely at private expense. The Software is delivered as "Commercial Computer Software" as defined in DFARS 252.227-7014 (June

1995) or as a commercial item as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in this Agreement, which is

3Com's standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov.

1995) or FAR 52.227-14 (June 1987), whichever is applicable.

TERM AND TERMINATION: The licenses granted hereunder are perpetual unless terminated earlier as specified below. You may terminate the licenses

and this Agreement at any time by destroying the Software and Documentation together with all copies and merged portions in any form. The licenses

and this Agreement will also terminate immediately if you fail to comply with any term or condition of this Agreement. Upon such termination you

agree to destroy the Software and Documentation, together with all copies and merged portions in any form.

LIMITED WARRANTIES AND LIMITATION OF LIABILITY: All warranties and limitations of liability applicable to the Software are as stated on the

Limited Warranty Card or in the product manual, whether in paper or electronic form, accompanying the Software. Such warranties and limitations of

liability are incorporated herein in their entirety by this reference.

GOVERNING LAW: This Agreement shall be governed by the laws of the State of California, U.S.A. excluding its conflicts of laws principles and

excluding the United Nations Convention on Contracts for the International Sale of Goods.

SEVERABILITY: In the event any provision of this Agreement is found to be invalid, illegal or unenforceable, the validity, legality and enforceability of

any of the remaining provisions shall not in any way be affected or impaired and a valid, legal and enforceable provision of similar intent and economic

impact shall be substituted therefor.

ENTIRE AGREEMENT: This Agreement sets forth the entire understanding and agreement between you and 3Com and supersedes all prior

agreements, whether written or oral, with respect to the Software and Documentation, and may be amended only in a writing signed by both parties.

Should you have any questions concerning this Agreement or if you desire to contact 3Com for any reason, please contact the 3Com subsidiary serving

your country, or write:

3Com Corporation, 350 Campus Drive, Marlborough, MA. USA 01752-3064

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OBTAINING SUPPORT FOR YOUR

PRODUCT

Product

Warranty and other service benefits start from the date of purchase, so it

is important to register your product quickly to ensure you get full use of

the warranty and other service benefits available to you.

Warranty and other service benefits are enabled through product

registration. Register your product at http://eSupport.3com.com/.

3Com eSupport services are based on accounts that you create or have

authorization to access. First time users must apply for a user name and

password that provides access to a number of eSupport features

including Product Registration, Repair Services, and Service Request. If

you have trouble registering your product, please contact 3Com Global

Services for assistance.

Purchase

Value-Added

Services

To enhance response times or extend warranty benefits, contact 3Com or

your authorized 3Com reseller. Value-added services like 3Com Express^SM

and Guardian^SMcan include 24x7 telephone technical support, software

upgrades, onsite assistance or advance hardware replacement.

Experienced engineers are available to manage your installation with

minimal disruption to your network. Expert assessment and

implementation services are offered to fill resource gaps and ensure the

success of your networking projects. More information on 3Com

maintenance and Professional Services is available at www.3com.com.

Contact your authorized 3Com reseller or 3Com for a complete list of the

value-added services available in your area.

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104

APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT

Troubleshoot

Online

You will find support tools posted on the 3Com Web site at

www.3com.com.

3Com Knowledgebase helps you troubleshoot 3Com products. This

query-based interactive tool is located at

http://knowledgebase.3com.com and contains thousands of technical

solutions written by 3Com support engineers.

Access Software

Downloads

Software Updates are the bug fix/maintenance releases for the version

of software initially purchased with the product. In order to access these

Software Updates you must first register your product on the 3Com Web

site at http://eSupport.3com.com/

First time users will need to apply for a user name and password. A link to

software downloads can be found at http://eSupport.3com.com/, or

under the Product Support heading at www.3com.com.

Software Upgrades are the feature releases that follow the software

version included with your original product. In order to access upgrades

and related documentation you must first purchase a service contract

from 3Com or your reseller.

Telephone Technical To enable telephone support and other service benefits, you must first

Support and Repair

Warranty and other service benefits start from the date of purchase, so it

is important to register your product quickly to ensure you get full use of

the warranty and other service benefits available to you.

When you contact 3Com for assistance, please have the following

information ready:

■

Product model name, part number, and serial number

Proof of purchase, if you have not pre-registered your product

A list of system hardware and software, including revision level

Diagnostic error messages

Details about recent configuration changes, if applicable

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To send a product directly to 3Com for repair, you must first obtain a

return authorization number (RMA). Products sent to 3Com, without

authorization numbers clearly marked on the outside of the package, will

be returned to the sender unopened, at the sender’s expense. If your

product is registered and under warranty, you can obtain an RMA

number online at http://eSupport.3com.com/. First time users will

need to apply for a user name and password.

3Com offers telephone, e-mail and internet access to technical support

and repair services. To access these services for your region, use the

appropriate telephone number, URL or e-mail address from the list below.

Telephone numbers are correct at the time of publication. Find a current

directory of contact information posted on the 3Com Web site at

http://csoweb4.3com.com/contactus/

Country

Telephone Number

Country

Telephone Number

Asia, Pacific Rim Telephone Technical Support and Repair

Australia

Hong Kong

India

1 800 678 515

800 933 486

+61 2 9424 5179 or

000800 650 1111

001 803 61009

00531 616 439 or

03 3507 5984

Philippines

1235 61 266 2602 or

1800 1 888 9469

800 810 3033

800 6161 463

080 333 3308

00801 611 261

001 800 611 2000

P.R. of China

Singapore

S. Korea

Taiwan

Thailand

Indonesia

Japan

Malaysia

New Zealand

Pakistan

1800 801 777

0800 446 398

+61 2 9937 5083

You can also obtain support in this region using the following e-mail: apr_technical_support@3com.com

Or request a repair authorization number (RMA) by fax using this number:

+ 65 543 6348

Europe, Middle East, and Africa Telephone Technical Support and Repair

From anywhere in these

regions, call:

+44 (0)1442 435529

From the following countries, you may use the numbers shown:

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106

APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT

Country

Telephone Number

Country

Telephone Number

Austria

Belgium

0800 297 468

0800 71429

800 17309

0800 113153

0800 917959

0800 182 1502

06800 12813

1 800 553 117

1800 945 3794

800 879489

Luxembourg

Netherlands

Norway

800 23625

0800 0227788

800 11376

00800 4411 357

800 831416

0800 995 014

900 938 919

020 795 482

0800 553 072

0800 096 3266

Denmark

Finland

France

Germany

Hungary

Ireland

Israel

Poland

Portugal

South Africa

Spain

Sweden

Switzerland

U.K.

Italy

You can also obtain support in this region using the following URL:

http://emea.3com.com/support/email.html

Latin America Telephone Technical Support and Repair

Antigua Barbuda

Argentina Local Number

Argentina

Aruba

Bahamas

Barbados

Belize

Bermuda

Bolivia

Brazil Local Number

Brazil

British Virgin Islands

Cayman Islands

Chile

Columbia Local Number

Colombia

Costa Rica

Curacao

Dominica

Dominique

Equador

AT&T +800 988 2112

54 11 5556 3200

0 810 444 3COM

Guadalupe

Guatemala

Guyana

Haiti

Honduras

Jamaica

Mexico Local Number

Mexico

Monserrat

Nicaragua

AT&T +800 998 2112

52 55 52 01 00 04

810 44 32 66

AT&T +800 998 2112

55 11 5643 2700

01 800 849CARE

01 800 849 2273

AT&T +800 998 2112

800 133 266

Panama

Paraguay

Peru

AT&T +800 998 2112

57 1 592 5000

Puerto Rico

Saba Anquila

St. Kitts Neives

St. Lucia

St. Vincent

Suriname

Trinidad and Tobago

Turks and Caycos

Uruguay - Montevideo

Venezuela

800 011 3266

AT&T +800 998 2112

El Salvador

French Guiana

Grenada

Virgin Islands

You can also obtain support in this region using the following:

Spanish speakers, enter the URL:

http://lat.3com.com/lat/support/form.html

Portuguese speakers, enter the URL:

http://lat.3com.com/br/support/form.html

English speakers in Latin America should send e-mail to:

lat_support_anc@3com.com

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Country

Telephone Number

Country

Telephone Number

US and Canada Telephone Technical Support and Repair

1 800 876 3266

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108

APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT

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GLOSSARY

802.11b The IEEE specification for wireless Ethernet which allows speeds of up to

11 Mbps. The standard provides for 1, 2, 5.5 and 11 Mbps data rates.

The rates will switch automatically depending on range and environment.

802.11g The IEEE specification for wireless Ethernet which allows speeds of up to

54 Mbps. The standard provides for 6, 12, 24, 36, 48 and 54 Mbps data

rates. The rates will switch automatically depending on range and

environment.

10BASE-T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5

twisted pair cable.

100BASE-TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5

twisted-pair cable.

Access Point An Access Point is a device through which wireless clients connect to

other wireless clients and which acts as a bridge between wireless clients

and a wired network, such as Ethernet. Wireless clients can be moved

anywhere within the coverage area of the access point and still connect

with each other. If connected to an Ethernet network, the access point

monitors Ethernet traffic and forwards appropriate Ethernet messages to

the wireless network, while also monitoring wireless client radio traffic

and forwarding wireless client messages to the Ethernet LAN.

Ad Hoc mode Ad Hoc mode is a configuration supported by most wireless clients. It is

used to connect a peer to peer network together without the use of an

access point. It offers lower performance than infrastructure mode, which

is the mode the router uses. (see also Infrastructure mode.)

Auto-negotiation Some devices in the range support auto-negotiation. Auto-negotiation is

where two devices sharing a link, automatically configure to use the best

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110

GLOSSARY

common speed. The order of preference (best first) is: 100BASE-TX full

duplex, 100BASE-TX half duplex, 10BASE-T full duplex, and 10BASE-T

half duplex. Auto-negotiation is defined in the IEEE 802.3 standard for

Ethernet and is an operation that takes place in a few milliseconds.

Bandwidth The information capacity, measured in bits per second, that a channel can

transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast

Ethernet is 100 Mbps. The bandwidth for 802.11b wireless is 11Mbps.

Category 3 Cables One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586

standard. Category 3 is voice grade cable and can only be used in

Ethernet networks (10BASE-T) to transmit data at speeds of up to 10

Mbps.

Category 5 Cables One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586

standard. Category 5 can be used in Ethernet (10BASE-T) and Fast

Ethernet networks (100BASE-TX) and can transmit data up to speeds of

100 Mbps. Category 5 cabling is better to use for network cabling than

Category 3, because it supports both Ethernet (10 Mbps) and Fast

Ethernet (100 Mbps) speeds.

Channel Similar to any radio device, the Wireless Cable/DSL router allows you to

choose different radio channels in the wireless spectrum. A channel is a

particular frequency within the 2.4GHz spectrum within which the Router

operates.

Client The term used to described the desktop PC that is connected to your

network.

DHCP Dynamic Host Configuration Protocol. This protocol automatically assigns

an IP address for every computer on your network. Windows 95,

Windows 98 and Windows NT 4.0 contain software that assigns IP

addresses to workstations on a network. These assignments are made by

the DHCP server software that runs on Windows NT Server, and Windows

95 and Windows 98 will call the server to obtain the address. Windows

98 will allocate itself an address if no DHCP server can be found.

DNS Server Address DNS stands for Domain Name System, which allows Internet host

computers to have a domain name (such as 3com.com) and one or more

IP addresses (such as 192.34.45.8). A DNS server keeps a database of

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GLOSSARY 111

host computers and their respective domain names and IP addresses, so

that when a domain name is requested (as in typing “3com.com” into

your Internet browser), the user is sent to the proper IP address. The DNS

server address used by the computers on your home network is the

location of the DNS server your ISP has assigned.

DSL modem DSL stands for digital subscriber line. A DSL modem uses your existing

phone lines to send and receive data at high speeds.

Encryption A method for providing a level of security to wireless data transmissions.

The Router uses two levels of encryption; 40/64 bit and 128 bit. 128 bit is

a more powerful level of encryption than 40/64 bit.

ESSID Extended Service Set Identifier. The ESSID is a unique identifier for your

wireless network. You must have the same ESSID entered into the router

and each of it's wireless clients.

Ethernet A LAN specification developed jointly by Xerox, Intel and Digital

Equipment Corporation. Ethernet networks use CSMA/CD to transmit

packets at a rate of 10 Mbps over a variety of cables.

Ethernet Address See MAC address.

Fast Ethernet An Ethernet system that is designed to operate at 100 Mbps.

Firewall Electronic protection that prevents anyone outside of your network from

seeing your files or damaging your computers.

Full Duplex A system that allows packets to be transmitted and received at the same

time and, in effect, doubles the potential throughput of a link.

Half Duplex A system that allows packets to transmitted and received, but not at the

same time. Contrast with full duplex.

Hub A device that regenerates LAN traffic so that the transmission distance of

that signal can be extended. Hubs are similar to repeaters, in that they

connect LANs of the same type; however they connect more LANs than a

repeater and are generally more sophisticated.

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112

GLOSSARY

IEEE Institute of Electrical and Electronics Engineers. This American

organization was founded in 1963 and sets standards for computers and

communications.

IETF Internet Engineering Task Force. An organization responsible for

providing engineering solutions for TCP/IP networks. In the network

management area, this group is responsible for the development of the

SNMP protocol.

Infrastructure mode Infrastructure mode is the wireless configuration supported by the Router.

You will need to ensure all of your clients are set up to use infrastructure

mode in order for them to communicate with the Access Point built into

your Router. (see also Ad Hoc mode)

IP Internet Protocol. IP is a layer 3 network protocol that is the standard for

sending data through a network. IP is part of the TCP/IP set of protocols

that describe the routing of packets to addressed devices. An IP address

consists of 32 bits divided into two or three fields: a network number and

a host number or a network number, a subnet number, and a host

number.

IP Address Internet Protocol Address. A unique identifier for a device attached to a

network using TCP/IP. The address is written as four octets separated with

periods (full-stops), and is made up of a network section, an optional

subnet section and a host section.

IPsec IP Security. Provides IP network-layer encryption. IPSec can support large

encryption networks (such as the Internet) by using digital certificates for

device authentication. When setting up an IPSec connection between

two devices, make sure that they support the same encryption method.

ISP Internet Service Provider. An ISP is a business that provides connectivity to

the Internet for individuals and other businesses or organizations.

LAN Local Area Network. A network of end stations (such as PCs, printers,

servers) and network devices (hubs and switches) that cover a relatively

small geographic area (usually not larger than a floor or building). LANs

are characterized by high transmission speeds over short distances (up to

1000 metres).

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GLOSSARY 113

MAC Media Access Control. A protocol specified by the IEEE for determining

which devices have access to a network at any one time.

MAC Address Media Access Control Address. Also called the hardware or physical

address. A layer 2 address associated with a particular network device.

Most devices that connect to a LAN have a MAC address assigned to

them as they are used to identify other devices in a network. MAC

addresses are 6 bytes long.

NAT Network Address Translation. NAT enables all the computers on your

network to share one IP address. The NAT capability of the Router allows

you to access the Internet from any computer on your home network

without having to purchase more IP addresses from your ISP.

NAT-T

Network A Network is a collection of computers and other computer equipment

that are connected for the purpose of exchanging information or sharing

resources. Networks vary in size, some are within a single room, others

span continents.

Network Interface A circuit board installed into a piece of computing equipment, for

Card (NIC) example, a computer, that enables you to connect it to the network. A

NIC is also known as an adapter or adapter card.

Protocol A set of rules for communication between devices on a network. The

rules dictate format, timing, sequencing and error control.

PPPoE Point-to-Point Protocol over Ethernet. Point-to-Point Protocol is a method

of data transmission originally created for dial-up connections; PPPoE is

for Ethernet connections.

PPTP Point-to-Point Tunneling Protocol is a method of secure data transmission

between two remote sites over the internet.

RJ-45 A standard connector used to connect Ethernet networks. The “RJ”

stands for “registered jack”.

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114

GLOSSARY

Router A device that acts as a central hub by connecting to each computer's

network interface card and managing the data traffic between the local

network and the Internet.

Server A computer in a network that is shared by multiple end stations. Servers

provide end stations with access to shared network services such as

computer files and printer queues.

SSID Service Set Identifier. Some vendors of wireless products use SSID

interchangeably with ESSID.

Subnet Address An extension of the IP addressing scheme that allows a site to use a single

IP network address for multiple physical networks.

Subnet mask A subnet mask, which may be a part of the TCP/IP information provided

by your ISP, is a set of four numbers configured like an IP address. It is

used to create IP address numbers used only within a particular network

(as opposed to valid IP address numbers recognized by the Internet,

which must assigned by InterNIC).

Subnets A network that is a component of a larger network.

Switch A device that interconnects several LANs to form a single logical LAN that

comprises of several LAN segments. Switches are similar to bridges, in

that they connect LANs of a different type; however they connect more

LANs than a bridge and are generally more sophisticated.

TCP/IP Transmission Control Protocol/Internet Protocol. This is the name for two

of the most well-known protocols developed for the interconnection of

networks. Originally a UNIX standard, TCP/IP is now supported on almost

all platforms, and is the protocol of the Internet.

TCP relates to the content of the data travelling through a network —

ensuring that the information sent arrives in one piece when it reaches its

destination. IP relates to the address of the end station to which data is

being sent, as well as the address of the destination network.

Traffic The movement of data packets on a network.

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GLOSSARY 115

universal plug and Universal plug and play is a system which allows compatible applications

play to read some of their settings from the Router. This allows them to

automatically configure some, or all, of their settings and need less user

configuration.

URL Filter A URL Filter is a feature of a firewall that allows it to stop its clients form

browsing inappropriate Web sites.

WAN Wide Area Network. A network that connects computers located in

geographically separate areas (for example, different buildings, cities, or

countries). The Internet is an example of a wide area network.

WDS Wireless Distribution System. WDS enables one or more Access Points to

rebroadcast received signals to extend range and reach, though this can

affect the overall throughput of data.

WECA Wireless Ethernet Compatibility Alliance. An industry group formed to

certify cross vendor interoperability and compatibility of 802.11b and

802.11g wireless networking products and to promote the standard for

enterprise, small business and home environments. (see also 802.11b,

802.11g, Wi-Fi)

WEP Wired Equivalent Privacy. A shared key encryption mechanism for wireless

networking. Encryption strength is 40/64 bit or 128 bit.

Wi-Fi Wireless Fidelity. This is the certification granted by WECA to products

that meet their interoperability criteria. (see also 802.11b, WECA)

Wireless Client The term used to describe a desktop or mobile PC that is wirelessly

connected to your wireless network

Wireless LAN Service Another term for ESSID (Extended Service Set Identifier)

Area

Wizard A Windows application that automates a procedure such as installation

or configuration.

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116

GLOSSARY

WLAN Wireless Local Area Network. A WLAN is a group of computers and

devices connected together by wireless in a relatively small area (such as a

house or office).

WPA Wi-Fi Protected Access. A dynamically changing encryption mechanism

for wireless networking. Encryption strength is 256 bit.

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117

REGULATORY NOTICES

GENERAL STATEMENTS

The 3Com OfficeConnect ADSL 11g Firewall Router, Model Number: WL-542 (3CRWDR100A-72,

3CRWDR100A-72, 3CRWDR100A-72) must be installed and used in strict accordance with the

manufacturer's instructions as described in the user documentation that comes with the product.

This product contains encryption. It is unlawful to export out of the U.S. without obtaining a U.S. Export

License.

This product does not contain any user serviceable components. Any unauthorized product changes or

modifications will invalidate 3Com's warranty and all applicable regulatory certifications and approvals.

EXPOSURE TO RADIO

FREQUENCY RADIATION

This device generates and radiates radio-frequency energy. In order to comply with FCC radio-frequency

exposure guidelines for an uncontrolled environment, this equipment must be installed and operated while

maintaining a minimum body to antenna distance of 20 cm (approximately 8 in).

The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not

emit RF field in excess of Health Canada limits for the general population; consult Safety Code 6, obtainable

from Health Canada's website www.hc-sc.gc.ca/rpb.

This product must maintain a minimum body to antenna distance of 20 cm. Under these conditions this

product will meet the Basic Restriction limits of 1999/519/EC [Council Recommendation of 12 July 1999 on

the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz)].

US - RADIO FREQUENCY

REQUIREMENTS

This device must not be co-located or operated in conjunction with any other antenna or transmitter.

US FEDERAL

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to

Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates, uses and can radiate radio frequency

energy and, if not installed and used in accordance with the instructions, may cause harmful interference to

radio communications. However, there is no guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful interference to radio or television reception, which can be

determined by turning the equipment off and on, the user is encouraged to try to correct the interference by

one or more of the following measures:

COMMUNICATIONS

COMMISSION (FCC) EMC

COMPLIANCE

■

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

The user may find the following booklet prepared by the Federal Communications Commission helpful:

The Interference Handbook

This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402. Stock No.

004-000-0034504.

3Com is not responsible for any radio or television interference caused by unauthorized modification of the

devices included with this 3Com OfficeConnect ADSL 11g Firewall Router, Model Number: WL-542

(3CRWDR100A-72, 3CRWDR100A-72, 3CRWDR100A-72), or the substitution or attachment of connecting

cables and equipment other than specified by 3Com.

The correction of interference caused by such unauthorized modification, substitution or attachment will be

the responsibility of the user.

Changes or modifications not expressly approved by 3Com could void the user's authority to operate this

equipment.

US MANUFACTURER'S FCC

DECLARATION OF

CONFORMITY

3Com Corporation

350 Campus Drive

Marlborough, MA 01752-3064, USA

(508) 323-5000

Date: July 19, 2005

Declares that the Product:

Brand Name: 3Com Corporation

Model Number: WL-542

Equipment Type: OfficeConnect ADSL 11g Firewall Router

Complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device

may not cause harmful interference, and (2) this device must accept any interference received, including

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118

interference that may cause undesired operation.

3Com OfficeConnect ADSL 11g Firewall

Router

Model WL-542

INDUSTRY CANADA - RF

COMPLIANCE

This device complies with RSS 210 of Industry Canada.

Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this

device must accept any interference, including interference that may cause undesired operation of this

device.

L ` utilisation de ce dispositif est autorisee seulement aux conditions suivantes: (1) il ne doit pas produire de

brouillage et (2) l' utilisateur du dispositif doit etre pret a accepter tout brouillage radioelectrique recu, meme

si ce brouillage est susceptible de compromettre le fonctionnement du dispositif.

The term "IC" before the equipment certification number only signifies that the Industry Canada technical

specifications were met.

To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that

the equivalent isotropically radiated power (EIRP) is not more than that required for successful

communication. To prevent radio interference to the licensed service, this device is intended to be operated

indoors and away from windows to provide maximum shielding. Equipment (or its transmit antenna) that is

installed outdoors is subject to licensing.

Pour empecher que cet appareil cause du brouillage au service faisant l'objet d'une licence, il doit etre utilize

a l'interieur et devrait etre place loin des fenetres afin de Fournier un ecram de blindage maximal. Si le matriel

(ou son antenne d'emission) est installe a l'exterieur, il doit faire l'objet d'une licence.

INDUSTRY CANADA -

EMISSIONS COMPLIANCE

STATEMENT

This Class B digital apparatus complies with Canadian ICES-003.

AVIS DE CONFORMITÉ À LA

RÉGLEMENTATION

D'INDUSTRIE CANADA

Cet appareil numérique de la classe B est conform à la norme NMB-003 du Canada.

SAFETY COMPLIANCE NOTICE

This device has been tested and certified according to the following safety standards and is intended for use

only in Information Technology Equipment which has been tested to these or other equivalent standards:

■

UL Standard 60950 (3rd Edition) or 60950

CAN/CSA C22.2 No. 60950 or 60950

IEC 60950

EN 60950

EU COMPLIANCE

For connection to ADSL networks

This equipment may be operated in:

NO CH

BG RO TR

Intended use: ADSL 802.11g/b Firewall Router

For connection to ADSL networks

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119

NOTE: To ensure product operation is in compliance with local regulations, select the country in which the

product is installed. Refer to 3CRWDR100A-72, 3CRWDR100A-72, 3CRWDR100A-72 User Guide.

English

Finnish

Hereby, 3Com Corporation, declares that this RLAN device is in compliance with

the essential requirements and other relevant provisions of Directive 1999/5/EC.

3Com Corporation vakuuttaa täten että RLAN device tyyppinen laite on direktiivin

1999/5/EY oleellisten vaatimusten ja sitä koskevien direktiivin muiden ehtojen

mukainen.

Dutch

Hierbij verklaart 3Com Corporation dat het toestel RLAN device in

overeenstemming is met de essentiële eisen en de andere relevante bepalingen van

richtlijn 1999/5/EG

Bij deze verklaart 3Com Corporation dat deze RLAN device voldoet aan de

essentiële eisen en aan de overige relevante bepalingen van Richtlijn 1999/5/EC.

French

Par la présente 3Com Corporation déclare que l'appareil RLAN device est conforme

aux exigences essentielles et aux autres dispositions pertinentes de la directive

1999/5/CE

Par la présente, 3Com Corporation déclare que ce RLAN device est conforme aux

exigences essentielles et aux autres dispositions de la directive 1999/5/CE qui lui

sont applicables

Swedish

German

Härmed intygar 3Com Corporation att denna RLAN device står I överensstämmelse

med de väsentliga egenskapskrav och övriga relevanta bestämmelser som framgår

av direktiv 1999/5/EG

Hiermit erklärt 3Com Corporation, dass sich dieser/diese/dieses Managed Accces

Point in Übereinstimmung mit den grundlegenden Anforderungen und den

anderen relevanten Vorschriften der Richtlinie 1999/5/EG befindet". (BMWi)

Hiermit erklärt 3Com Corporation die Übereinstimmung des Gerätes RLAN device

mit den grundlegenden Anforderungen und den anderen relevanten Festlegungen

der Richtlinie 1999/5/EG. (Wien)

Greek

ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ 3Com Corporation ΔΗΛΩΝΕΙ ΟΤΙ RLAN device

ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ ΤΙΣ ΟΥΣΙΩΔΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ

ΣΧΕΤΙΚΕΣ ΔΙΑΤΑΞΕΙΣ ΤΗΣ ΟΔΗΓΙΑΣ 1999/5/ÅÊ

Italian

Con la presente 3Com Corporation dichiara che questo RLAN device è conforme ai

requisiti essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva

1999/5/CE.

Spanish

Por medio de la presente 3Com Corporation declara que el RLAN device cumple

con los requisitos esenciales y cualesquiera otras disposiciones aplicables o exigibles

de la Directiva 1999/5/CE

Portuguese

Malti

3Com Corporation declara que este RLAN device está conforme com os requisitos

essenciais e outras disposições da Directiva 1999/5/CE.

Hawnhekk, 3Com Corporation, jiddikjara li dan RLAN device jikkonforma

mal-htigijiet essenzjali u ma provvedimenti orajn relevanti li hemm

fid-Dirrettiva 1999/5/EC

Estonian

Käesolevaga kinnitab 3Com Corporation seadme RLAN device vastavust direktiivi

1999/5/EÜ põhinõuetele ja nimetatud direktiivist tulenevatele teistele asjakohastele

sätetele.

Hungarian

Alulírott, 3Com Corporation nyilatkozom, hogy a RLAN device megfelel a

vonatkozó alapvetõ követelményeknek és az 1999/5/EC irányelv egyéb

elõírásainak.

Slovak

3Com Corporation týmto vyhlasuje, ze RLAN device spĺňa základné

po_iadavky a všetky príslušné ustanovenia Smernice 1999/5/ES.

Czech

3Com Corporation tímto prohlašuje, ze tento RLAN device je ve shodě se

základními pozadavky a dalšími příslušnými ustanoveními směrnice 1999/5/ES.

Slovene

Lithuanian

Latvian

Šiuo 3Com Corporation deklaruoja, kad šis RLAN device atitinka esminius

reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.

Šiuo 3Com Corporation deklaruoja, kad šis RLAN device atitinka esminius

reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.

Ar šo 3Com Corporation deklarē, ka RLAN device atbilst Direktīvas 1999/5/EK

būtiskajām prasībām un citiem ar to saistītajiem noteikumiem.

A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page for

the 3Com OfficeConnect ADSL 11g Firewall Router (3CRWDR100A-72, 3CRWDR100A-72,

3CRWDR100A-72) at http://www.3com.com.

Also available at http://support.3com.com/doc/WL-542_EU_DOC.pdf

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120

EU - RESTRICTIONS FOR USE

IN THE 2.4GHZ BAND

This device may be operated indoors or outdoors in all countries of the European Community using the

2.4GHz band: Channels 1 - 13, except where noted below.

■

In Italy the end-user must apply for a license from the national spectrum authority to operate this device

outdoors.

■

In Belgium outdoor operation is only permitted using the 2.46 - 2.4835 GHz band: Channel 13.

In France outdoor operation is only permitted using the 2.4 - 2.454 GHz band: Channels 1 - 7.

BRAZIL RF COMPLIANCE

Este equipamento opera em caráter secundário, isto é, não tem direito a proteção contra interferência

prejudicial, mesmo de estações do mesmo tipo, e não causar interferência a sistema operando em caráter

primário.

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INDEX

DNS Screen 55

DSL mode 29

Dynamic Domain Server (DDNS) Screen 70

Dynamic IP Address 34

Dynamic/Fixed IP for Bridge Mode Screen 35, 55

DYNDNS 70

Numbers

128-bit WEP 46

128-bit WEP Screen 46

1483 Bridge Mode 55

64-bit WEP Screen 47

Access Control Screen 62

Add PC Screen 63

Add Schedule Rule Screen 65

Addresses

Editing DHCP Clients List Screen 42

Encryption Screen 44

Encryption, disabling 45

IP 85

Admin Password Screen 75

ADSL Status Screen 77

Advanced Screen 68

Automatic Addressing 87

Firewall Screen 59

Forgotten Password 80

Hostname

Backup/Restore Settings Screen 74

Bridge Mode for Single PC Screen 53

Bridged Mode Configuration Screen 33

configuring 56

Hostname and MAC Address Screen 56

Internet

Cable Specifications 91

Channels 111

addresses 85

Internet Properties Screen 26

Internet Protocol (TCP/IP) Properties Screen 24

IP Address 41, 85

Configuration Summary Screen 37

Connection Type Screen 29, 50

Conventions

IPSEC 68

notice icons, About This Guide 8

text, About This Guide 8

LAN Settings Screen 41

LED 14

DDNS 70

LEDs 14

Local Area Properties Screen 24

Logs Screen 77

DHCP 87

DHCP Clients List 42

DHCP server 25, 42

disabling 26

DMZ Screen 67

DNS 24

MAC Address 56

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122

INDEX

configuring 56

MAC Address Filtering Screen 66

mode 30

Subnet Mask 85

TCP/IP 23, 25, 85

Technical

NAT (Network Address T r anslation) 68

specifications 89

standards 89

Time and Time Zone screen 76

TZO.com 70

NAT-T (NAT Traversal) 68

Network

addresses 85

Networking

wireless 81

NIC

Universal Plug and Play 68

Upgrade Screen 74

URL Blocking Screen 64

wireless 14

Password 27, 75

Poison Reverse 58

PPPoA 31

Virtual Servers Screen 61

VPI/VCI 30, 32, 33, 34, 36

PPPoA Screen 31

PPPoA Settings Screen 52

PPPoE 26, 30, 31

PPPoE Screen 30

PPPoE Settings Screen 51

WAN Ping Blocking 68

WDS 49

Web Browser Location Field 27

Web Proxy 26

WiFi Protected Access 45, 48

Wireless

networking 81

NIC 14

Wireless Configuration Scree 43

Wireless Settings Screen 31, 32, 33, 35, 36, 43

Wireless WDS Settings Screen 49

WPA (with RADIUS Server) Screen 48

WPA-PSK (no server) Screen 45

Remote Admin 68

Reset to Factory Default Screen 73

Reset to Factory Defaults 80

Restart Router Screen 73

RFC 1483 Bridged Mode 32, 53

RFC 1483 Routed Mode 34

RIP (Routing Information Protocol) 57

RIP Parameter Screen 58

Router Login Screen 28

Routing Mode Screen 34

Routing Table Screen 59

Schedule Rule Screen 65

Setup Wizard 27

SNMP Community Screen 71

SNMP Trap Screen 72

Special Applications Screen 60

Specifications

technical 89

SSID 31, 32, 33, 35, 36, 43

Static Addressing 87

Static Route Parameters Screen 57

Status Screen 28, 40

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