Load Balancing
Router
User’s Guide
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TABLE OF CONTENTS
1: INTRODUCTION ................................................................................................................................ 1
Internet Features ............................................................................................................................ 1
Other Features................................................................................................................................ 3
Package Contents .......................................................................................................................... 4
Physical Details .............................................................................................................................. 4
2: BASIC SETUP.................................................................................................................................... 8
Overview.......................................................................................................................................... 8
Procedure........................................................................................................................................ 8
3: ADVANCED PORT SETUP ............................................................................................................. 19
Overview........................................................................................................................................ 19
Port Options.................................................................................................................................. 19
Load Balance ................................................................................................................................ 21
Advanced PPPoE.......................................................................................................................... 23
Advanced PPTP............................................................................................................................ 24
4: ADVANCED SETUP ........................................................................................................................ 25
Overview........................................................................................................................................ 25
Host IP Setup ................................................................................................................................ 25
Virtual Server ................................................................................................................................ 28
Custom Virtual Server.................................................................................................................. 30
Special Application ...................................................................................................................... 32
Dynamic DNS................................................................................................................................ 34
Multi DMZ....................................................................................................................................... 36
UPnP .............................................................................................................................................. 38
NAT................................................................................................................................................. 39
Advanced Features ...................................................................................................................... 41
5: SECURITY MANAGEMENT ……………………………………………………………………………..44
Block URL...................................................................................................................................... 44
Access Filter ................................................................................................................................. 46
Session Limit ................................................................................................................................ 46
System Filter Exception………………………………………………………………………….…… 49
6: QOS CONFIGURATION ………………………………………………………………………………….50
Overview ………………………………………………………………………………………………...50
QoS Setup ..................................................................................................................................... 50
Policy Configuration .................................................................................................................... 51
7: MANAGEMENT ASSISTANT.......................................................................................................... 52
Overview........................................................................................................................................ 52
SNMP.............................................................................................................................................. 52
Email Alert..................................................................................................................................... 53
Syslog ............................................................................................................................................ 55
Admin Password .......................................................................................................................... 57
Upgrade Firmware........................................................................................................................ 58
8: ADVANCED LAN CONFIGURATION ………………………………………………………………...59
Overview........................................................................................................................................ 59
Existing DHCP Server ………………………………………………………………………………...59
Routing .......................................................................................................................................... 59
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9: OPERATION AND STATUS........................................................................................................... 63
Operation....................................................................................................................................... 63
System Status............................................................................................................................... 63
WAN Status ................................................................................................................................... 66
NAT Status .................................................................................................................................... 67
APPENDIX A SPECIFICATIONS......................................................................................................... 69
APPENDIX B WINDOWS TCP/IP SETUP........................................................................................... 70
Overview........................................................................................................................................ 70
TCP/IP Settings............................................................................................................................. 70
APPENDIX C TROUBLESHOOTING.................................................................................................. 76
Overview........................................................................................................................................ 76
General Problems......................................................................................................................... 76
Internet Access............................................................................................................................. 76
Copyright ©2004. All Rights Reserved.
Document Version: 1.4
All trademarks and trade names are the properties of their respective owners.
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1: Introduction
Congratulations on the purchase of your new Load Balancer. The Load Balancer provides Shared
Broadband Internet Access for all LAN users.
Figure 1-1: Load Balancer
Internet Features
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Shared Broadband Internet Access
All LAN users can access the Internet through the Load Balancer, by sharing one (1) or two (2)
Broadband modems and connections.
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High-Performance Dual Modem Support
The Load Balancer has two (2) WAN ports, allowing connection of two (2) Broadband modems.
This gives twice the bandwidth of a single modem.
Flexible configuration allows each port to use a different type of modem and connection method.
Also, you can determine how the Internet traffic is shared between the 2 modems.
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Supports all common Connection Methods
All popular DSL and Cable Modems and connection methods are supported, including Fixed IP,
Dynamic IP, PPPoE, and PPTP.
PPPoE Session Management
Multiple PPPoE sessions are supported and you can choose to “map” sessions to individual PCs
if desired.
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Multiple IP Address Support
If your ISP allocates you multiple IP addresses, these are also supported and you can “map” IP
addresses to individual PCs if desired.
Special Applications
This feature allows you to use some non-standard applications, where the port number used for
the response is different to the port number used by the sender.
Virtual Servers
This feature allows Internet users to access Internet servers on your LAN. For standard servers
such as Web, FTP or E-Mail servers, only the IP address of the server PC is required. You can
also define you own Server types if required.
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Multiple DMZ
A "DMZ" PC will receive incoming connection requests, which would otherwise be blocked. For
each IP address allocated by your ISP, a separate "DMZ" PC can be specified. So if your ISP has
given you multiple IP addresses, you can have multiple “DMZ” PCs. Each “DMZ” PC has
unrestricted 2-way Internet access, providing the ability to run programs that are otherwise
incompatible with NAT routers like the Load Balancer.
Access Filter
The network Administrator can use the Access Filter to gain fine control over the Internet access
and applications available to LAN users. Five (5) user groups are available, and each group can
have different access rights.
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•
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Block URL
Use this feature to block access to undesirable Web sites by LAN users. You can even have
different settings for different groups of PCs.
Session Limit
With Session Limit feature, if the numbers of new sessions for system exceed the maximum in
the sampling time, any new session in the system will be drop.
System Filter Exception
With firewall exception, the packets will not be processed by firewall or NAT module, but be
processed directly by system protocol stack.
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Other Features
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4-Port Switching Hub
The Load Balancer incorporates a 4-port 10 /100BaseT switching hub, making it easy to create or
extend your LAN.
DHCP Server Support
Dynamic Host Configuration Protocol provides a dynamic IP address to PCs and other devices
upon request. The Load Balancer can act as a DHCP Server for devices on your local LAN.
Multi Segment LAN Support
LANs containing one or more segments are supported, via The Load Balancer's built-in static
routing table.
ARP proxy
The ARP proxy feature allows you to assign an external (Internet) IP address to The Load
Balancer's LAN port. This allows Servers on your LAN to have external (Internet) IP addresses.
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Easy Setup
Use your favorite WEB browser for configuration.
Remote Management
The Load Balancer can be managed from any PC on your LAN. And, if the Internet connection
exists, it can also (optionally) be configured via the Internet.
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Password - protected Configuration
Optional password protection is provided to prevent unauthorized users from modifying the
configuration data and settings.
HTTP Firmware Upgrade and backup
The web management feature allows you to use HTTP upgrade new firmware and backup
system configuration from local or even from remote site. As long as you enable “Remote
upgrade” and “Remote web-based setup” from Advanced feature web page.
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Email Alert
It will send a warning email to the system administrator, if one of the WAN ports was
disconnected when both WAN ports are enabled.
Syslog
It can generate real time system information on the web page or a particular machine. It is useful
to monitor the device.
QoS Configuration.
This function will make some specified packets with higher priority for pass-through. Especially
you use real-time applications like Internet phone, video conference,. etc.
UPnP
To “Enable” UpnP (Universal Plug & Play), the load balancer will become one of the network
devices. It is useful to discovery and control network devices, such as Internet gateway.
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Package Contents
The following items should be included:
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The Load Balancer Unit
Power Adapter
Quick Installation Guide
CD-ROM containing the on-line manual.
If any of the above items are damaged or missing, please contact your dealer immediately.
Physical Details
Front Panel
Operation of the Front Panel LEDs is as follows:
LAN
LINK/ACT ON – Physical connection or data in/out.
OFF – No physical connection.
10M/100M ON – The corresponding LAN port is using 100BaseT.
OFF – 10BaseT connection on the corresponding LAN port or no connection.
WAN
LINK/ACT ON – Physical connection to the Broadband modem on WAN port 1/2 established.
OFF – No physical connection on WAN port 1/2.
10M/100M ON – Physical connection using 100BaseT on WAN port 1/2 established.
OFF – 10BaseT connection or no connection on WAN port 1/2.
System
Power OFF – No power.
ON – Normal Operation
Status OFF – Normal operation.
ON – Firmware not loaded or Hardware error.
Blinking – Data in/out
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Also, some Status and Error conditions are indicated by combinations
of LEDs, as shown below
LED Action
Condition
WAN1 LINK/ACT & 10M/100M LEDs flash alternatively.
WAN1 LINK/ACT & 10M/100M LEDs flash concurrently.
WAN1 LINK/ACT & 10M/100M LEDs solid On
WAN2 LINK/ACT & 10M/100M LEDs solid On
LAN1 LINK/ACT & 10M/100M LEDs solid On
Firmware Download in progress.
MAC address not assigned.
SDRAM error
Timer/Interrupt error
LAN/WAN error
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Rear Panel
Figure 1-2: Rear Panel
DC 5V
Connect the supplied power adapter here.
WAN 2
Connect the 2nd Broadband Modem here, if available.
Reset Button
When pressed and released, The Load Balancer will reboot (restart) within 1
second. It resets to default over 3 seconds.
LAN Ports
Connect the PCs to these ports. Both 10BaseT and 100BaseT connections can
be used simultaneously.
Note:
Any port will automatically operate as an "Uplink" port if required. Just use a
normal LAN cable to connect to a normal port on another hub.
WAN 1
Connect the primary Broadband Modem here.
Default Settings
When The Load Balancer has finished booting, all configuration settings will be set to the factory
defaults, including:
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IP Address set to its default value of 192.168.1.1, with a Network Mask of 255.255.255.0
DHCP Server is enabled
User Name: admin
Password cleared (no password)
TFTP Download
This setting should be used only if your Load Balancer is unusable, and you wish to restore it by
downloading new firmware. Follow this procedure:
1. Power On The Load Balancer.
2. Use the supplied Windows utility or a TFTP client program applies the new firmware. If using the
supplied Windows TFTP program, the screen will look like the following example.
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Figure 1-3: Windows TFTP utility
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Enter the name of the firmware upgrade file on your PC, or click the "Browse" button to locate
the file.
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Enter the LAN IP address of The Load Balancer in the "Server IP" field.
Click "Download" to send the file to The Load Balancer.
3. When downloading is finished. It should then work normally, using the default settings.
Note:
The supplied Windows TFTP utility also allows you to perform three (3) other operations:
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Save the current configuration settings to your PC (use the "Upload" button).
Restore a previously-saved configuration file to The Load Balancer (use the "Download" button).
Set The Load Balancer to its default values (use the "Set to Default" button).
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2: Basic Setup
Overview
Basic Setup of your Load Balancer involves the following steps:
1. Attach The Load Balancer to one (1) PC, and configure it for your LAN.
2. Install your Load Balancer in your LAN, and connect the Broadband Modem or Modems.
3. Configure your Load Balancer for Internet Access.
4. Configure PCs on your LAN to use The Load Balancer.
Requirements
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One (1) or two (2) DSL or Cable modems, each with an Internet Access account with an ISP.
Network cables. Use standard 10/100BaseT network (UTP) cables with RJ45 connectors
TCP/IP network protocol must be installed on all PCs.
Procedure
1: Configuring The Load Balancer for your LAN
1. Use a standard LAN cable to connect your PC to any Hub port on The Load Balancer.
2. Connect the power adapter and power up The Load Balancer. Only use the power adapter
provided; using a different one may cause hardware damage.
3. Start your PC. If your PC is already running, restart it. It will then obtain an IP address from The
Load Balancer.
4. Start your WEB browser.
5. In the Address or Location box enter:
HTTP://192.168.1.1
6. You will be prompted for the User Name and password, as shown below.
Figure 2-1: Password Dialog
7. Enter admin for the "User Name" and leave the "Password" blank.
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The "User Name" is always admin
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You can and should set a password, using the following Admin Password screen.
No Response ?
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Is your PC using a Fixed IP address ?
If so, you must configure your PC to use an IP address within the range 192.168.1.2 to
192.168.1.254, with a Network Mask of 255.255.255.0. See Appendix B – Windows
TCP/IP Setup for details.
•
Check that The Load Balancer is properly installed, LAN connection is OK, and it is
powered ON.
8. After the login, you will then see the Admin Password screen, as shown below.
Assign a password by entering it in the "Password" and "Verify Fields.
Figure 2-2: Home Screen (Admin Password)
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9. Select LAN & DHCP from the menu. You will see a screen like the example below.
Figure 2-3: LAN & DHCP
10. Ensure these settings are suitable for your LAN:
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The default settings are suitable for many situations.
See the following table for details of each setting.
11. Save your data, then go to Step 2, Installing The Load Balancer in your LAN.
Settings – LAN & DHCP
IP Address
IP address for The Load Balancer, as seen from the local LAN. Use the
default value unless the address is already in use or your LAN is using a
different IP address range. In the latter case, enter an unused IP Address
from within the range used by your LAN.
Subnet Mask
The default value 255.255.255.0 is standard for small (class "C") networks.
For other networks, use the Subnet Mask for the LAN segment to which The
Load Balancer is attached (the same value as the PCs on that LAN
segment).
DHCP Server
Configuration
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DHCP Server Setup - If Enabled, The Load Balancer will allocate IP
Addresses to PCs (DHCP clients) on your LAN when they start up. The
default and recommended value is "Enable". (Windows systems, by
default, act as DHCP clients. This setting is called Obtain an IP address
automatically.)
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DHCP Server Setup - If you are already using a DHCP Server, the
DHCP Server setting must be Disabled, and the existing DHCP server
must be set to provide the IP address of The Load Balancer as the
Default Gateway.
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Client Lease Time – It is a finite period of time for a DHCP server lease
an IP address to a client..
Client Default DNS – An IP address of the default DNS server for the
client requesting DHCP service.
DHCP IP Address
Range
Offered Range fields set the values used by the DHCP server when
allocating IP Addresses to DHCP clients. This range also determines the
number of DHCP clients supported.
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Free Entries indicates how many DHCP entries are not currently
allocated, and still available.
ARP Proxy
Enable this ONLY if the LAN port has an IP address in the same address
range as the WAN port(s). This means that all PCs using this Gateway must
have valid fixed external (Internet) IP addresses.
If enabled, enter the IP address range used on your LAN.
LAN Any IP Setup By default is disabled. If you enable “LAN Any IP”, that means no matter what
static IP address hold on the client (your PC). The client has do not need to
change the IP address, even though it has different IP segment than LAN
segment. It still can access Internet through NAT.
DHCP Client List
This table shows the IP addresses which have been allocated by the DHCP
Server function. For each address which has been allocated, the following
information is shown.
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Name – The "hostname" of the PC. In some cases, this may not be
known.
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MAC Address – The physical address (network adapter address) of the
PC.
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IP Address – The IP address allocated to this PC.
Type – Indicates IP address to be dynamic or static.
Status – If Dynamic, the IP address was allocated by this DHCP Server.
If Sniffed, the IP address was detected by examining the LAN, rather than
allocated by the DHCP Server. In this case, the Name is usually not
known.
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Time Left – The time expired since which IP address is leased.
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2. Installing The Load Balancer in your LAN
Figure 2-4: Installation Diagram
1. Ensure The Load Balancer and the DSL/Cable modem are powered OFF.
Leave the modem or modems connected to their data line.
2. Connect the Broadband modem or modems to The Load Balancer.
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If using only one (1) Broadband modem, connect it to the "WAN 1" port.
Use the cable supplied with your DSL/Cable modem. If no cable was supplied, use a
standard cable.
3. Use standard LAN cables to connect PCs to the Switching Hub ports on The Load Balancer.
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Both 10BaseT and 100BaseT connections can be used simultaneously.
If you need to connect The Load Balancer to another Hub, just use a standard LAN cable to
connect any port on The Load Balancer to a standard port on another hub. Any LAN port on
The Load Balancer will automatically act as an "Uplink" port when required.
4. Power Up
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Power on the Cable or DSL modem or modems.
Connect the supplied power adapter to The Load Balancer and power up.
5. Check the LEDs
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The Power LED should be ON.
The WAN – Link LED should be ON, if the corresponding WAN port is connected to a
broadband modem.
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The Error LED will flash during start up, but will then turn Off. If it stays On, there is an error
condition.
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For each PC connected to the LAN ports, the corresponding LAN LED (either 10 or 100)
should be ON.
3. Configuring The Load Balancer for Internet Access
Select Primary Setup from the menu, to see a screen like the example below.
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Configure WAN 1 and/or WAN 2 as required.
For any of the following situations, refer to Chapter 3: Advanced Port Setup for any further
configuration, which may be required.
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Using both ports
Multiple IP addresses on either port
Multiple PPPoE sessions
PPTP connection method
Figure 2-5: Primary Setup Screen
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Settings – Primary Setup
Connection
Mode
Select the appropriate setting:
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Enable – Select this if you have connected a broadband modem to this
port.
Disable – Select this if there is no broadband modem connected to this
port.
Backup – Use this if you have a broadband modem on each port, and wish
to normally use only one. Select Enable for the primary port, and Backup
for the secondary port. The Backup port will only be used if the primary port
fails.
Connection
Type
Check the data supplied by your ISP, and select the appropriate option.
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Static IP – Select this if your ISP has provided a Fixed or Static IP
address. Then enter the data into the Address Info fields.
Dynamic IP – Select this if your ISP provides an IP address automatically,
when you connect. You can ignore the Address Info fields.
PPPoE – Select this if your ISP uses this method. (Usually, your ISP will
provide some PPPoE software. This software is no longer required, and
should not be used.)
If this method is selected, you must complete the PPPoE dialup fields.
Note:
If using the PPTP connection method, select Static IP or Dynamic IP, as
appropriate, according to the IP address method used by your ISP.
Address Info
This is for Static IP users only. Enter the address information provided by your
ISP. If your ISP provided multiple IP address, you can use the Multi-DMZ
screen to assign the additional IP addresses.
PPPoE / PPTP
Dialup
This is for PPPoE and PPTP users only.
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Enter the Username and Password provided by your ISP.
If using PPTP, enable the PPTP Connection checkbox, and enter the IP
address of the PPTP server.
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Host name (Optional For PPPoE),This field is used by a Host to uniquely
associate an access concentrator to a particular Host request.
Note:
There are additional PPPoE/PPTP options on the Port Options screen.
To use multiple PPPoE sessions on either port, configure the Advanced
PPPoE screen.
DNS
If using a Fixed IP address, you MUST enter at least 1 DNS address.
If using Dynamic IP or PPPoE, DNS information is optional.
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Optional
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Host name – This is required by some ISPs. If your ISP provided a Host
Name, enter it here. Otherwise, you can use the default value.
Domain name – This is required by some ISPs. If your ISP provided a
Domain Name, enter it here. Otherwise, you can use the default value.
MAC address – Some ISP's record your MAC address (also called
"Physical address" or "Network Adapter address"). If so, you can enter the
MAC address expected by your ISP in this field. Otherwise, this should be
left at the default value.
Setup of The Load Balancer is now complete. PCs on your LAN must now be configured. See the
following section for details.
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4: Configure PCs on your LAN
Overview
For each PC, the following may need to be configured:
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TCP/IP network settings
Internet Access configuration
TCP/IP Settings
If using the default Load Balancer settings, and the default Windows 95/98/ME/2000/XP TCP/IP
settings, no changes need to be made. Just start (or restart) your PC.
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By default, The Load Balancer will act as a DHCP Server, automatically providing a suitable IP
Address (and related information) to each PC when the PC boots.
For all non-Server versions of Windows, the default TCP/IP setting is to act as a DHCP client. In
Windows, this is called Obtain an IP address automatically.
Just start (or restart) your PC, and it will obtain an IP address from The Load Balancer.
•
If using fixed IP addresses on your LAN, or you wish to check your TCP/IP settings, refer to
Appendix B – Windows TCP/IP Setup.
Internet Access
To configure your PCs to use The Load Balancer for Internet access, follow this procedure:
For Windows 9x/2000
1. Select Start Menu - Settings - Control Panel - Internet Options.
2. Select the Connection tab, and click the Setup button.
3. Select "I want to set up my Internet connection manually, or I want to connect through a local
area network (LAN)" and click Next.
4. Select "I connect through a local area network (LAN)" and click “Next”.
5. Ensure all of the boxes on the following Local area network Internet Configuration screen are
unchecked.
6. Check the "No" option when prompted "Do you want to set up an Internet mail account now?".
7. Click Finish to close the Internet Connection Wizard.
Setup is now completed.
For Windows XP
1. Select Start Menu - Control Panel - Network and Internet Connections.
2. Select Set up or change your Internet Connection.
3. Select the Connection tab, and click the Setup button.
4. Cancel the pop-up "Location Information" screen.
5. Click Next on the "New Connection Wizard" screen.
6. Select "Connect to the Internet" and click “Next”.
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7. Select "Set up my connection manually" and click “Next”.
8. Check "Connect using a broadband connection that is always on" and click Next.
9. Click Finish to close the New Connection Wizard.
Setup is now completed.
Accessing AOL
To access AOL (America On Line) through The Load Balancer, the AOL for Windows software must
be configured to use TCP/IP network access, rather than a dial-up connection. The configuration
process is as follows:
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Start the AOL for Windows communication software. Ensure that it is Version 2.5, 3.0 or later.
This procedure will not work with earlier versions.
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Click the Setup button.
Select Create Location, and change the location name from "New Locality" to "Load Balancer".
Click Edit Location. Select TCP/IP for the Network field. (Leave the Phone Number blank.)
Click Save, then OK.
Configuration is now complete.
•
Before clicking "Sign On", always ensure that you are using the "Load Balancer" location.
Macintosh Clients
From your Macintosh, you can access the Internet via The Load Balancer. The procedure is as
follows.
1. Open the TCP/IP Control Panel.
2. Select Ethernet from the Connect via pop-up menu.
3. Select Using DHCP Server from the Configure pop-up menu. The DHCP Client ID field can be left
blank.
4. Close the TCP/IP panel, saving your settings.
Note:
If using manually assigned IP addresses instead of DHCP, the required changes are:
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Set the Router Address field to The Load Balancer’s IP Address.
Ensure your DNS settings are correct.
Linux Clients
To access the Internet via The Load Balancer, it is only necessary to set The Load Balancer as the
"Gateway", and ensure your Name Server settings are correct.
Ensure you are logged in as "root" before attempting any changes.
Fixed IP Address
By default, most Unix installations use a fixed IP Address. If you wish to continue using a fixed IP
Address, make the following changes to your configuration.
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Set your Default Gateway to the IP Address of The Load Balancer.
Ensure your DNS (Name server) settings are correct.
To act as a DHCP Client (recommended)
The procedure below may vary according to your version of Linux and X -windows shell.
1. Start your X Windows client.
2. Select Control Panel - Network
3. Select the "Interface" entry for your Network card. Normally, this will be called "eth0".
4. Click the Edit button, set the "protocol" to "DHCP", and save this data.
5. To apply your changes
Use the "Deactivate" and "Activate" buttons, if available.
OR, restart your system.
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3: Advanced Port Setup
Overview
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Port Options contains some options, which can be set on either or both WAN ports. For most
situations, the default values are satisfactory.
Load Balance screen is only functional if you are using both WAN ports. It allows you to
determine the proportion of WAN traffic sent through each port.
Advanced PPPoE setup is required if you wish to use multiple sessions on one or both of the
WAN ports. It can also be used to manually connect or disconnect a PPPoE session. Otherwise,
this screen can be ignored.
•
Advanced PPTP setup is required if using the PPTP connection method.
Port Options
Figure 3-1: Port Options
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Settings – Port Options
Connection Validation
•
Health Check – Disable will not do Alive Indicator Check. By
default health check is enable. Health checking is performing an
ICMP echo request and HTTP packets to the specific destination
that could be either: 1. Name or IP Address user specified in the
“Alive Indicator” input box or gateway of WAN interface if “Alive
Indicator” input box is left blank.
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Alive Indicator – This is the IP address used to check if the WAN
connection is operating. The Load Balancer will contact this system
to check if the WAN connection is working. Change this address if
you wish. Default is the gateway IP.
Note: This is not used for PPPoE connections.
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MTU – The Maximum Transmission Unit for the Ethernet data. It is
used to determining the packet size to be used on the WAN
interface. Normally, this does not need to be changed, but if your
ISP advises you to use a particular MTU, enter it here.
PPPoE / PPTP
Connection Options
Auto Dialup – If set to Enable a connection will be established
whenever outgoing WAN traffic is detected. If not Enabled, you
must establish a connection manually.
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Auto Disconnect – This determines when an idle connection will
be terminated. Enter the required time period.
Echo Time – This determines how often an Echo request is sent to
the PPPoE server. The Echo request is used to determine if the
connection is still valid. Normally, there is no need to change the
default value.
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Echo Retry – The number of time the Echo request will be sent, if
there is no response to the first request. Normally, there is no need
to change the default value.
Transparent Bridge
Option
Bridge Mode – If set to Enable, this WAN port doesn’t use NAT &
Load Balance function when LAN/WAN IP have the real IP
addresses on the same network segment.
NetBIOS Broadcast – This will allow you access files through
Microsoft network neighborhood. If you enable the NetBIOS
Broadcast.
Traffic Management –Strict Binding: traffic from bridge hosts(eg.
transparent to wan1) can only go thru that specified wan(eg.
wan1) interface. Loose Binding: traffic from bridge hosts(eg.
transparent to wan1) can go thru alternative wan(eg.
wan2) interface when bind interface (eg. wan1) is down, it's acting
like a fail over mechanism for transparent bridge mode. Load
Balancing: Traffic from bridge hosts(eg. transparent to wan1) can
go thru either wan(eg. wan1 or wan2) interface based on loading
mechanism specified in the load balance section, it's acting like a
load balancing mechanism for transparent bridge mode.
•
ARP Table – ARP table is used by the device to determine the
bridge hosts’ location ( eg, inside/outside wan and which wan) its’
size can be adjusted if needed.
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Load Balance
This screen is only operational if using Internet connections on both WAN ports.
Figure 3-2: Load Balance
These settings are only functional if using both WAN ports. If using both WAN ports, these settings
determine the proportion of traffic sent over each port.
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Settings – Load Balance
Load Balance
Configuration
•
Enable – Use this to enable your Load Balance settings. Unless this is
checked, the other settings on this screen have no effect.
•
Balance Type – Select the desired option:
•
•
•
•
Bytes rx+tx – Traffic is measured by Bytes.
Packets rx+tx – Traffic is measured by Packets.
Sessions established – Traffic is measured by Sessions.
IP Address – Traffic is measured by IP address.
•
Loading Share on WAN 1 – Enter the percentage (%) of traffic to be sent
over WAN 1. If one WAN port connection has greater bandwidth than the
other, the one with the greater bandwidth should be given a higher percentage
of traffic than the other.
Click the "Update" button to save your changes.
NAT
Statistics
This section displays the current data about WAN 1 and WAN 2. You can use this
information to help you "fine-tune" the settings above.
Interface
Statistics
This section displays cumulative statistics.
Use the "Restart Counters" button to restart these counters when required.
Buttons
•
•
•
Update – Save the settings on this screen.
Refresh – Update the data on screen.
Restart Counters – Restart the counters used in the "Interface Statistics"
section.
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Advanced PPPoE
The screen is required in order to use multiple PPPoE sessions on the same WAN port.
It can also be used to manually connect or disconnect a PPPoE session.
Figure 4: Advanced PPPoE
Settings – Advanced PPPoE
WAN Port
PPPoE Session
Select the desired Port and Session, then click the "Select" button. The data
for the selected Port/Session will then be displayed in the WAN IP Account
section.
Session MTU
The Maximum Transfer Unit for PPPoE packet data. Leave it as default,
unless the ISP offers different PPPoE packets data size.
WAN IP Account
•
•
•
•
User Name – Enter the PPPoE user name assigned by your ISP.
Password – Enter the PPPoE password assigned by your ISP.
Verify Password – Re-enter the PPPoE password assigned by your ISP.
IP Address – If you have a fixed IP address, enter if here. Otherwise, this
field should be left at 0.0.0.0.
•
Host Name – This field is used by a Host to uniquely associate an access
concentrator to a particular Host request.
Action
Use the "Connect" and "Disconnect" buttons to establish or terminate a
connection on this session, if required.
Connection
Status
This displays the current connection status for each session.
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Advanced PPTP
This screen is only useful if using the PPTP connection method.
Figure 5: Advanced PPTP
Settings – Advanced PPTP
WAN Port
Select the desired Port, then click the "Select" button. The data for the
selected Port will then be displayed in the WAN IP Account section.
WAN IP Account
•
•
User Name – The PPTP user name (login name) assigned by your ISP.
Password – The PPTP password associated with the User Name above.
This is assigned by your ISP, and used to login to the PPTP Server.
•
•
Verify Password – Re-enter the PPTP password assigned by your ISP.
Server IP Address – Enter the IP address of the PPTP Server, as
provided by your ISP.
•
Static IP Address – If you have a fixed IP address, enter if here.
Otherwise, this field should be left at 0.0.0.0.
Action
Use the "Connect" and "Disconnect" buttons to establish or terminate a
connection on this session, if required.
Connection
Status
This displays the current connection status.
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4: Advanced Configuration
Overview
The following advanced features are provided.
•
•
•
•
•
•
•
•
Host IP Setup
Virtual Servers
Custom Virtual Server
Special Applications
Dynamic DNS
Multi DMZ
Advanced Features
UPnP
This chapter contains details of the configuration and use of each of these features.
Host IP Setup
This feature is used in the following situations:
•
•
You have Multi-Session PPPoE, and wish to bind each session to a particular PC on your LAN.
You wish to use the Access Filter feature. This requires that each PC be identified by using the
Host IP Setup screen.
•
•
You wish to have different Block URL settings for different PCs. This requires that each PC be
identified by using the Host IP Setup screen. (You do not have to use the Host IP feature to
apply the same Block URL settings to all PCs.)
You wish to reserve a particular (LAN) IP address for a particular PC on your LAN. This allows
the PC to use DHCP (Windows calls this "Obtain an IP address automatically") while gaining the
benefits of a fixed IP address. The PC's IP address will never change, so it can be provided to
other people and applications.
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Figure 4-1: Host IP Setup
Settings – Host IP Setup
Host Network This section identifies each Host (PC)
Identity
•
Host List – When adding a new Host, ignore this list. To edit an existing
entry, select it from the list, and click the "Select" button. The data fields will
then be updated with data for the selected entry.
•
•
Host name – Enter a suitable name. Generally, you should use the
"Hostname" (computer name) defined on the Host itself.
MAC Address – Also called Physical Address or Network Adapter Address.
Enter the MAC address of this host.
•
•
Select Group – Select the group you wish to put this host into.
Reserve in DHCP – Select Enable to reserve a particular (LAN) IP address
for a particular PC on your LAN. This allows the PC to use DHCP (Windows
calls this "obtain an IP address automatically") while having an IP address
which never changes.
•
Reserved IP – Enter the IP address you wish to reserve, if the setting above
is Enable. Otherwise, ignore this field.
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Host Network
Binding
•
•
Bind WAN port/Session – Select Enable if you wish to associate this PC with
a particular PPPoE Session. All traffic for that PC will then use the selected
PPPoE port and session.
Binding Method – Suppose your PC is bound to WAN1 port, now you are
selecting “Strict Binding”. If WAN1 port is disconnected, your packets cannot
go out through WAN2 port, if WAN2 port is still alive. If you are selecting
“Loose Binding” then when WAN1 port is disconnected, your packets will
automatically go to WAN2, if WAN2 is alive.
•
Select WAN Port/Select PPPoE session – If the setting above is Enable,
select the desired Port and Session. Otherwise, ignore these settings.
Note: Multiple PPPoE sessions are defined on the Advanced PPPoE screen.
Buttons
•
Add – Use this to add a new entry to the database, using the data shown on
screen.
•
•
Delete – Click this to delete the selected entry.
Update – Use this to update the selected entry, after making the desired
changes.
•
Reset – Reverse any changes you have made since loading the data from
The Load Balancer.
Host & Group This table shows the current bindings.
List
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Virtual Servers
This feature allows you to make Servers on your LAN accessible to Internet users. Normally, Internet
users would not be able to access a server on your LAN because:
•
•
Your Server's IP address is only valid on your LAN, not on the Internet.
Attempts to connect to devices on your LAN are blocked by the firewall in The Load Balancer.
The "Virtual Server" feature solves these problems and allows Internet users to connect to your
servers, as illustrated below.
Figure 4-2: Virtual Servers
Note that, in this illustration, both Internet users are connecting to the same IP Address, but using
different protocols.
Connecting to the Virtual Servers
Once configured, anyone on the Internet can connect to your Virtual Servers. They must use The
Load Balancer's Internet IP Address (the IP Address allocated by your ISP).
e.g.
•
•
To Internet users, all virtual Servers on your LAN have the same IP Address. This IP Address is
allocated by your ISP.
This address should be static, rather than dynamic, to make it easier for Internet users to connect
to your Servers. However, you can use the Dynamic DNS feature (explained later in this chapter)
to allow users to connect to your Virtual Servers using a URL, instead of an IP Address.
e.g.
HTTP://my_domain_name.dyndns.org
FTP://my_domain_name.dyndns.org
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Figure 4-3: Virtual Server
Settings – Virtual Server
Enable
Use this to Enable or Disable each Virtual server as required.
Server Type
Select the desired Server type. If the type of Server you wish to use is not listed,
use the Custom Virtual Server screen to define your own type.
LAN IP
Address
Enter the IP address of the PC on your LAN which is running the required Server
software.
Each PC should have a fixed IP address, or have a reserved IP address. (See the
Host IP section earlier in this chapter for details on reserving an IP address.)
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Custom Virtual Servers
This screen allows you to define your own Server types, for situations when the desired Server type
is not listed on the Virtual Servers screen.
Figure 4-4: Custom Virtual Servers
Settings – Custom Virtual Servers
Select Custom Server
Name
Server List
If creating a new entry, ignore this list.
To edit an existing entry, select it, and then click the "Select" button.
The screen will update with data for the selected entry.
Custom Server
Configuration
This data defines the Custom Virtual Server:
•
•
•
Server Name – Enter a suitable name for this server.
State – Use this to Enable or Disable the server as required.
Server IP – Enter the IP address of the PC on you LAN which is
running the required Server software.
Each PC should have a fixed IP address, or have a reserved IP
address. (See the Host IP section earlier in this Chapter for details
on reserving an IP address.)
Each PC must be running the appropriate Server software.
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•
•
Protocol Type – Select the network protocol used by this sever
type.
LAN Port Range – Enter the range of port number used for
outgoing traffic from this Server. If only a single port is required,
enter it in both fields.
•
•
WAN Port Range - – Enter the range of port number used for
incoming traffic to this Server. If only a single port is required, enter
it in both fields
Interface Binding – This selection allows the severs binding WAN1
port or WAN2 port, or even both WAN1 and WAN2 ports together.
Buttons
•
•
•
•
Add – Create a new Special Application entry.
Delete – Delete the selected entry.
Update – Save any changes you have made to the current entry.
Cancel – Cancel any changes you have made since the last save
operation.
Custom Virtual Server
List
This table shows details of all Custom Virtual Servers which have been
defined.
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Special Applications
If you use Internet applications which have non-standard connections or port numbers, you may find
that they do not function correctly because they are blocked by the firewall in The Load Balancer. In
this case, you can define the application as a "Special Application" in order to make it work.
Note that the terms "Incoming" and "Outgoing" on this screen refer to traffic from the client (PC)
viewpoint
Figure 4-5: Special Applications
Settings – Special Applications
Select Special Application Name
Select Name Item
This lists any special applications, which are currently defined.
•
•
If adding a new Special Application, ignore this list.
Just enter your data in the Special Application Configuration
section, and click the "Add" button.
To edit an existing entry, select it from this list, and click the "Select"
button. The data for the selected application will then be displayed
in the Special Application Configuration section.
Make any required changes, and then click the "Update" button.
Special Application Configuration
Enable
Name
Use this to Enable or Disable this Special Application as required.
Enter a descriptive name to identify this Special Application.
Outgoing Protocol
Select the protocol used by this application, when sending data to the
remote server or PC.
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Outgoing Port Range
Enter the beginning and end of the range of port numbers used by the
application server, for data you send. If the application uses a single
port number, enter it in both fields.
Incoming Protocol
Select the protocol used by this application, when receiving data from
the remote server or PC.
Incoming Port Range
Enter the beginning and end of the range of port numbers used by the
application server, for data you receive. If the application uses a single
port number, enter it in both fields.
Buttons
•
•
•
•
Add – Create a new Special Application entry.
Delete – Delete the selected entry.
Update – Save any changes you have made to the current entry.
Cancel – Cancel any changes you have made since the last save
operation.
Special Application
List
This shows details of all Special Applications which are currently
defined.
Using a Special Application on your PC
•
•
•
Once the Special Applications screen is configured correctly, you can use the application on your
PC normally. Remember that only one (1) PC can use each Special application at any time.
Also, when 1 PC is finished using a particular Special Application, there may need to be a "Time-
out" period before another PC can use the same Special Application.
If an application still cannot function correctly, try using the "DMZ" feature, if possible.
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Dynamic DNS
Dynamic DNS is very useful when combined with the Virtual Server feature. It allows Internet users to
connect to your Virtual Servers using a URL, rather than an IP Address.
This also solves the problem of having a dynamic IP address. With a dynamic IP address, your IP
address may change whenever you connect to your ISP, which makes it difficult to connect to you.
You must register for the Dynamic DNS service. The Load Balancer supports 2 types of service
providers:
•
Other sites may offer the same service, but can not be guaranteed to work.
•
•
TZO at http://www.tzo.com
To use the Dynamic DNS feature
1. Register for the service from your preferred service provider.
2. Follow the service provider's procedure to have a Domain Name (Host name) allocated to you.
3. Configure the Dynamic DNS screen, as described below.
4. The Load Balancer will then automatically update your IP Address recorded by the Dynamic DNS
service provider.
5. From the Internet, users will now be able to connect to your Virtual Servers (or DMZ PC) using
your Domain name.
Figure 4-6: Dynamic DNS
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Settings – Dynamic DNS
Dynamic DNS Use this to Enable/Disable the Dynamic DNS feature, and select the required
Service
service provider.
•
•
Disable – Dynamic DNS is not used.
the TZO section of this screen.
•
Standard Client – Select this to use the standard service (from
www.dyndns.org or other provider). You must configure the Standard Client
section of this screen.
•
•
3322(in China) – This is available in China. It is similar to “Standard client”
User Defined DDNS Server – This is the user define DDNS server. If the
DDNS other than TZO, dyndns.org and 3322.
WAN Port
Binding
•
•
Select the WAN port on which the Dynamic DNS is used.
The "Force Update" button will update your record on the Dynamic DNS
Server immediately.
Additional
Standard
Client or 3322
Settings
These options are available if using the standard client.
•
•
•
Enable Wildcard – If selected, traffic sent to sub-domains (of your Domain
name) will also be forwarded to you.
Enable backup MX – If enabled, you must enter the Mail Exchanger address
below.
Mail Exchanger – If the setting above is enabled, enter the address of the
backup Mail Exchanger.
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Multi DMZ
This feature allows each WAN port IP address to be associated with one (1) computer on your LAN.
All outgoing traffic from that PC will be associated with that WAN port IP address. Any traffic sent to
that IP address will be forwarded to the specified PC, allowing unrestricted 2-way communication
between the "DMZ PC" and other Internet users or Servers.
Note:
The "DMZ PC" is effectively outside the Firewall, making it more vulnerable to attacks. For this
reason, you should only enable the DMZ feature when required
Figure 4-7: Multi DMZ
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Settings – Multi DMZ
Enable
Use this to enable or disable the DMZ setting, as required.
Name
Enter a name to assist you to remember this setting. This name has no effect
on the operation.
For Static IP
Public IP address
Enter the WAN port (Internet) IP address you wish to associate to a PC. This
IP address must have been allocated to you by your ISP.
Private IP Address Enter the IP address of the PC you wish to associate with this WAN port IP
(LAN)
address. This IP address should be fixed, or reserved. (See the Host IP
section for details on reserving an IP address.)
For Dynamic IP
WAN
Select the desired WAN port.
Session
•
Select "DHCP" if the IP address on this WAN port is dynamically
assigned. You can only select assign one (1) Private (LAN) IP address to
each port.
•
If using multi-session PPPoE, select the desired PPPoE session. These
sessions are defined on the Advanced PPPoE screen. You can assign
one (1) one (1) Private (LAN) IP address to each PPPoE session.
Private IP Address Enter the IP address of the PC you wish to associate with this WAN port IP
(LAN)
address. This IP address should be fixed, or reserved. (See the Host IP
section for details on reserving an IP address.)
Access Group
Direction
You can decide the users to have the authority of using DMZ, by define the
groups.
For DMZ, you can allow inbound, outbound only, or both inbound and
outbound both.
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UPnP
With UPNP (Universal Plug & Play) function, it can easily setup and configure an entire network,
enable discovery and control of networked devices and services.
Figure 4-8: UPnP
Settings – UPnP
If you Enable UPnP, then this two wan router will become one of the entire
local network. You can find out there is an icon show up on network
neighborhood on the window XP OS.
UPnP Option
Every time you add a new network device with port mapping, The new
network device will appear on the mapping list.
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NAT
NAT (Network Address Translation) is the technology which allows one (1) WAN (Internet) IP
address to be used by many LAN users.
Figure 4-9: NAT
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Settings – NAT
NAT
Configuration
•
NAT Routing – You can enable or disable NAT through the check box. If you
disable NAT checkbox, it will act as a bridge or Static Router. Most features
will be unavailable.
•
•
•
•
•
TCP Timeout – Enter the desired value to use on both WAN ports. The
default is 300.
UDP Timeout – Enter the desired value to use on both WAN ports. The
default is 120.
TCP Window Limit – Enter the desired value to use on both WAN ports. The
default is 0 (no limit).
TCP MSS Limit – Enter the required MSS (Maximum Segment Size) to use
on both WAN ports. The default is 0 (no limit).,
Disable Port Translation –If some packets whose port number cannot be
translated for special applications, you must input value in port range for
“Disable Port Translation”
NAT Alias
•
For each alias entry, the Wan IP acts as an alias IP of the host with Local Lan
IP to internet via the specified WAN port for the specified Protocol packets
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Advanced Features
This screen allows you to change some advanced settings:
•
•
•
Remote Access Configuration – This feature allows you to manage The Load Balancer via the
Internet. You can restrict access to a specified IP address or address range.
External Filters Configuration – These settings determine whether or not The Load Balancer
should respond to ICMP (ping) requests received from the WAN port.
Interface Binding – Use these to ensure that certain traffic is sent by a particular WAN port, and
thereby a particular ISP account. These settings are only useful if using both WAN ports.
Protocol & Port Binding – This allows you binding WAN1 or WAN2 ports by selecting TCP/UDP
protocol.
Figure 4-10: Advanced Features
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Settings – Advanced Features
Remote
Access
Configuration
•
Remote Upgrade – If enabled, you can use the supplied Windows program to
remotely upgrade the Firmware. If not enabled, upgrades must be performed
by a PC on the LAN.
•
Remote Web-based setup - – If enabled, access to the Web-based interface
is available via the Internet. (See below for details.) If not enabled, access is
only available to PCs on the LAN.
•
•
Port – The port number used when connecting remotely. See below for
details.
Allowed IP range – Remote access is only available to the IP addresses
entered here.
•
•
Leaving these fields blank will allow access by all PCs.
These addresses must be Internet IP addresses, not addresses on the
local LAN.
•
To specify a single address, enter it in both fields.
•
IDENT Port – Port 113 is associated with the Internet's (Identification /
Authentication) service. When a client program in your computer contacts a
remote server for services such as POP, IMAP, SMTP, that remote server
sends back a query to the "Ident" server running in many systems listening for
these queries on port 113. This means that port 113 is often probed by
attackers as a rich source of your personal information. By default it is
“Disable”.
External
Filters
These settings determine whether or not The Load Balancer should respond to
ICMP (ping) requests received from the WAN port.
Configuration
•
Block Selected packet types – This acts as "master" switch. If checked, the
selected packet types are blocked. Otherwise, they are accepted.
•
Echo Request, Timestamp Request, … Select the packet types you wish to
block, using the checkboxes.
DNS
Loopback
When you have some servers on LAN and their domain names have already
registered on public DNS. To avoid DNS loopback problem, please enter the
following fields.
•
Domain Name – Enter the domain name specified by you for local
host/server.
•
Private IP – Enter the private IP address of your local host/server.
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Interface
Binding
SMTP (Simple Mail Transport Protocol) Binding
Unless you are using E-mail accounts from different ISPs on each port, you can
ignore these settings.
Some ISPs configure their E-mail Servers so they will not accept E-mail from IP
addresses not allocated by themselves. If you are using accounts from different
ISPs, sending E-mail over the wrong port may result in non-acceptance of the
mail. In this case, you can use these settings to correct the problem.
•
Enable - If enabled, the port you specify below will be used for all outgoing
SMTP traffic. If not enabled, either port will be used.
•
WAN 1 / WAN 2 – Select the desired port.
Protocol &
Port Binding
Protocol and Port Binding
Use these settings if you wish to ensure that particular traffic is sent by a
particular WAN port, and thereby a particular ISP account.
•
•
•
•
Enable - Enable or disable each item as required.
Source IP - IP address of source which packets are sent from.
Destination IP – IP address of destination which packets are sent to.
Subnet Mask – With subnet mask other than 255.255.255.255, you can
make a IP sub-network as your destination.
•
•
Protocol - Select the protocol used by the traffic you wish to configure.
Port Range - Enter the beginning and end of the port range used by the traffic
you wish to configure. If only a single port is used, enter the port number in
both fields.
•
WAN - Select the port you wish this traffic to use.
Using Remote Web-based Setup
To connect to The Load Balancer from a remote PC via the Internet:
1. Ensure that both your PC and The Load Balancer are connected to the Internet.
2. Start your Web Browser.
3. In the "Address" bar, enter "HTTP://" followed by the Internet IP Address of The Load Balancer. If
the port number is not 80, the port number is also required. (After the IP Address, enter ":"
followed by the port number.)
e.g.
HTTP://123.123.123.123:8080
•
•
This example assumes the WAN IP Address is 123.123.123.123, and the port number is 8080.
If using the Dynamic DNS feature, you can connect using the domain name allocated to you.
e.g.
HTTP://my_domain_name.dyndns.org:8080
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5: Security Management
Overview
•
•
•
•
URL Filter It can block specific or browse only certain website by configure IP address, URL or
Key words
Access filter You can block all Internet access or select block well-known port or block user
define ports by groups.
Session Limit It can eliminate users access Internet, and send email alert to the administrator. If
the device detect new sessions that is exceed the maximum sampling time.
Firewall Exception It can eliminate users access Internet, and send email alert to the
administrator. If the device detect new sessions that is exceed the maximum sampling time.
URL Filter
This feature allows you to block access to undesirable Web sites. You can block by URL, IP address,
or Keyword. You can also have different blocking settings for different groups of PCs.
•
•
In operation, every URL is searched to see if it matches or contains any of the URL or keywords
entered here. Then, after a DNS lookup determines the IP address of the requested site, the
site's IP address is checked against IP address entries on this screen.
Note that a single IP address may host many Web sites. Entering the IP address on this screen
will block all Web sites hosted on that IP address.
Figure 5-1: URL Filter
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Settings – URL Filter
Access Group
This allows you have different blocking rules for different Groups of PCs.
•
All PCs (users) are in the Default Group unless moved to another group on
the Host IP screen.
•
If you want the same restrictions to apply to everyone, select Default for the
Group. In this case, there is no need to enter any Hosts on the Host IP
screen.
•
•
If you wish to apply different restrictions on different Groups, select the
desired Group, and click the "Select" button. The screen will update with
data for the selected Group.
URL List Type – Black List: If you select Black List, It will block the URL
that you keep it on Access Item. White List: If you are select White List
type, it will block the entire URL except you keep it on the Access Item.
•
•
•
Submit Button – Button to submit Black List or White List.
Block Internet
Access
Enable/Disable – Use this to Enable or Disable each setting, as required.
Block URL/IP/Keyword – Enter the URL, IP address or keyword you wish
to block.
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Access Filter
The network Administrator can use the Access Filter to gain fine control over the Internet access and
applications available to LAN users.
•
•
Five (5) user groups are available, and each group can have different access rights.
All PCs (users) are in the Default group, unless assigned to another group on the Host IP screen.
Figure 5-2: Access Filter
Settings – Access Filter
Setup Access Group
This allows you have different access rights for different Groups of PCs.
•
If you want the same restrictions to apply to everyone, select
Default for the Group. In this case, there is no need to enter any
Hosts on the Host IP screen.
•
If you wish to apply different restrictions on different Groups, select
the desired Group, and click the "Select" button. The screen will
update with data for the selected Group.
Filter Setting
Select the desired option for this Group:
•
•
No filtering – Nothing is blocked, Internet access is not restricted.
Block All Access – Everything is blocked, Internet access is not
available.
•
Block selected items – Items selected on this screen are blocked.
You can block well known services by using the checkboxes, or
define your own filters.
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Block Well-known
ports
Select the services you wish to block. The current group will not be able
to use any services which are checked.
User-defined Ports to
Block
This section is optional. It allows you to define your own filters if
required. For each filter, the following information is required.
•
•
Name – Enter a meaningful name for this filter.
TPC/UDP Packets – Select either TCP or UDP, depending on
which protocol is used by the service you wish to block.
•
Port No. Range – Enter the range of port numbers used by the
service you wish to block. If only a single port is required, enter it in
both fields.
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Session Limit
This new feature allows to drop the new sessions from both WAN and LAN side. If the new
sessions number are exceed the maximum sessions in a sampling time.
Figure 5-3: Session Limit
Session Limit
The period to count the new session. Only those new sessions
occurred in the most recently sampling time were be count for limit
checking.(Default is 400 mil-sec)
Sampling Time
Maximum of Total New If the number of new sessions for system exceed the maximum in the
session
Sampling Time. Any new sessions in the system will be dropped.
(Default: 65535 session/sec)
Maximum of New
Sessions for Host
If the number of new sessions for the host exceeds the maximum in the
sampling time. Any new session of the host will be dropped. (Default:
session/sec)
Maximum of Dropped
If the number of dropped new sessions for the host exceeds the
New Sessions for Host Maximum in the sampling time, any new session of the host will be
dropped for the pause time.
Pause Time
Within the pause time, no new session of the suspended host could be
served by system.( Default is 5 minutes)
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System Filter Exception
System Filter Exception Rules: The rules with which any received packets is complied, the packets
will not processed by Firewall or NAT module, but to be processed directly by system protocol stack.
Figure 5-4: System Filter Exception
Firewall Exception
Enable
The check box can allow you enable or disable firewall exception.
Interface
You can select LAN, WAN1, WAN2 or ALL interfaces to be process by
the system protocol stack. If you enable check box.
Protocol
There are six protocols (UDP/TCP/ICMP/GRE/ESP/AH) to choose to let
packets directly process by the system protocol stack.
Foreign Port Range
Device Port Range
Select foreign port number range directly process by system protocol
stack. If enable check box.
Select device port number range directly process by system protocol
stack. If enable check box.
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6: QoS Configuration
Overview
The Load Balancer provides QoS, which supports the high quality of network service.
Because it will classify outgoing packets based on some policies defined by users, make some
real-time applications to get better response or performance.
QoS Setup
The following web page management are guiding you how to setup QoS and make QoS work.
Figure 6-1:QoS Setup
Data – QoS Setup.
QoS Feature
Š
Enable QoS – This will allow users enable QoS function.
•
Queuing Method – The methods that how you manage your queue.” Priority
queuing”. It is one of the first queuing variations to be wildly implemented.
IP TOS ( Type
of Service)
Feature
•
•
Process TOS Field –An 8 bits field in the IP packet header designed to
contain values indicating how each packet should be handled in the network.
If you choose "enable" then it will enable this function to process IP Type of
Service field.
Overwrite policy priority – Choose “yes” to set the priority of TOS field in IP
packet overwrite the priority defined in policy configuration
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Policy Configuration
When you use QoS, you must define some policies to make some packets to have higher priority
to pass through.
Figure 6-2: Policy Configuration
Data – Policy Configuration.
Network
Admission
Policy
This section identifies each policy
•
Policy Name List – When adding a new Policy, ignore this list. To edit an
existing entry, select it from the list, and click the "Select" button. The data
fields will then be updated with data for the selected entry.
•
•
Policy Name – Enter a suitable name. Generally, you should use the "Policy
Name" for the network traffic.
Source Address – Define the source address of packets here. It has two
types like IP address or MAC address. If you select IP address, you can
define IP address range, otherwise define up to four MAC addresses.
•
Destination Address – Define the destination address of packets here. The
explanation is as the same as above.
•
•
•
•
Protocol Type – The field defines traffic packet type, i.e. IP,TCP and UDP.
Source Port – Define the source port of packets here.
Destination Port – Define the destination port of packets here.
Priority Queue – It defines a packet if it meets all conditions defined above, it
will be serviced with some priority level.
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7: Management Assistant
Overview
The following advanced features are provided.
•
•
•
•
•
SNMP
Email Alert
SNMP
Syslog
Upgrade Firmware
This chapter contains details of the configuration and use of each of these features.
SNMP
This section is only useful if you have SNMP (Simple Network Management Protocol) software on
your PC. If you have SNMP software, you can use a standard MIB II file with The Load Balancer.
Figure 7-1: SNMP
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Settings – SNMP
System
Information
•
•
•
Contact Person – The name of the person responsible for this device.
Device name – The name of The Load Balancer.
Physical Location – The location of The Load Balancer.
Trap Targets
Enter the IP address of any targets (PCs running SNMP software) to which you
want traps to be sent. All traps are level 1.
Email Alert
This feature will send an warning Email, inform system administrator that one of the WAN ports was
disconnected.
Email Alert – You can choose to enable or disable it to send a warning email.
Email Sender Address – It is an email address which will send the warning email.
Email (SMTP) Server Address – It is an email server address the warning email will be sent to.
Email Recipient Address – It is an email address of system administrator the email will be sent to.
Figure 7-2: Email Alert
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Settings – Email Alert
Enable/Disable
Email Alert
•
Enable – This will enable email alert to send a warning email when WAN
port was disconnected.
Email Alert
Configuration
•
•
Sender Address – It is an email address that sends a warning email to a
recipient.
Recipient Address –It is an email address a warning email will be sent
to. Usually it is system administrator email address. For example:
•
SMTP Server Address - It is an email sever address,a warning email
will be sent to. If you are enabled email alert. For example:
mail.domain.com.
•
•
SMTP server user name – This is the user name of email sender for
authentication (optional).
SMTPserver password - This is the user password
Event
ICMP Ping Attack – This feature is useful to prevent ICMP attack from WAN
or LAN. It will drop the packets if the ping times are excessive the threshold
value. It will send email to the administrator, if email is enabled.
URL Violation – If toy enable this function, it will send an email to a
administrator who is (are) violation the URL filter.
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Syslog
This feature can send real time system information on the web page or to the specified PC.
Syslog Configuration – Syslog Configuration allow you where to send system information to other
machine or not. There are up to three machines you can choose to send your system log.
Message Status– Messages send only keep when “keep send message” checked. Currently we
keep last 100 messages in the RAM area, they will clear when reboot or power off.
Figure 7-3:Syslog
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Syslog Configuration
Syslog Global
•
Enable – Set to “enable”, if you want to send system log messages to
other machine.
Keep Sent Messages
Syslog Server
•
Enable – Checked this, if you want to keep sent messages, otherwise
the sent messages will be deleted.
•
•
•
IP address: Up to 3 syslog servers can be used.
Enable: You can enable or disable each server temporarily.
Port: If your syslog server does not use the default port, you can change
it.
•
Log Priority Level: The syslog messages are divided into 8 levels, from
Emergency to Debug level. The lower level, the less messages will be
generated. Emergency is the lowest priority level, and Debug is the
highest one.
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Admin Password Screen
The password screen allows you to assign a password to The Load Balancer.
Figure 7-4: Admin Password Screen
Enter the desired password, re-enter it in the Verify Password field, then save it.
When you connect to The Load Balancer with your Browser, you will be prompted for the password
when you connect, as shown below.
Figure 7-5: Password Dialog
•
•
Enter "Admin" for the User Name.
Enter the password for The Load Balancer, as set on the Admin Password screen above.
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Upgrade Firmware
This Upgrade Firmware Screen allows you to upgrade firmware or backup system configuration by
using HTTP upgrade.
Figure 7-6: Firmware Upgrade Screen
Š
Š
You can backup your system configuration by press “save” button of Save System Configuration.
It will save the system configuration for you. (Notice: You have to refresh the browser after you
saved the system configuration file)
You also can do firmware upgrade by input the correct password and the file name of your
firmware. Remember do not Reset or Restart the device while update new firmware, because it
may cause system to crash.
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8: Advanced LAN Configuration
Overview
These screens and settings are provided to deal with non-standard situations, or to provide additional
options for advanced users.
Existing DHCP Server
If your LAN already has a DHCP Server, and you wish to continue using it, the following configuration
is required.
•
•
•
The DHCP Server function in The Load Balancer must be disabled. This setting is on the LAN &
DHCP screen.
Your DHCP Server must be configured to provide The Load Balancer's LAN IP address as the
"Default Gateway".
Your DHCP Server must provide correct DNS addresses to the PCs.
Routing
This section is only relevant if your LAN has other Routers or Gateways.
•
•
If you don't have other Routers or Gateways on your LAN, you can ignore the Static Routing
page completely.
If your LAN has other Gateways and Routers, you must configure the Static Routing screen as
described below. You also need to configure the other Routers.
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Figure 8-1: Routing
Note:
If there is an entry or entries in the Routing table with an Index of zero (0), these are System entries.
You cannot modify or delete these entries.
Settings – Routing
Dynamic
Routing
•
RIP v2 – This acts as “master” switch. If enabled, the selected WAN or LAN
will run RIPv1/v2, otherwise they don’t have RIP function.
•
•
•
•
LAN, WAN1, WAN2 – If enabled, any WAN or LAN can execute RIP function.
Entry Index
If adding a new entry, ignore this field.
To edit an existing entry, select it from the list, and click the "Select" button.
The screen will then update with the data for the selected entry.
•
If the Index is 0, this is a System entry that you can neither delete nor modify.
Network
Address
The network address of the remote LAN segment. For standard class "C" LANs,
the network address is the first 3 fields of the Destination IP Address. The 4th
(last) field can be left at 0.
Netmask
The Network Mask for the remote LAN segment. For class "C" networks, the
default mask is 255.255.255.0
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Gateway
The IP Address of the Gateway or Router that The Load Balancer must use to
communicate with the destination above. (NOT the router attached to the remote
segment.)
Interface
Metric
Select the correct interface, usually "LAN". The "WAN" interface is only available
if NAT (Network Address Translation) is disabled.
The number of "hops" (routers) to pass through to reach the remote LAN
segment. The shortest path will be used.
Configuring Other Routers on your LAN
All traffic for devices not on the local LAN must be forwarded to The Load Balancer, so that they can
be forwarded to the Internet. This is done by configuring other Routers to use The Load Balancer as
the Default Route or Default Gateway, as illustrated by the example below.
Static Routing - Example
Segment 1
(192.168.2.xx)
(192.168.2.80)
(192.168.1.100)
Segment 0
(192.168.1.xx)
Router A
(192.168.1.1)
Router B
(192.168.3.70)
(192.168.2.90)
Segment 2
(192.168.3.xx)
Figure 8-2: Routing Example
For The Load Balancer Gateway's Routing Table
For the LAN shown above, with 2 routers and 3 LAN segments, The Load Balancer requires 2 entries
as follows.
Entry 1 (Segment 1)
Destination IP
Address
192.168.2.0
Network Mask
255.255.255.0
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Gateway IP Address
Interface
192.168.1.100
LAN
2
Metric
Entry 2 (Segment 2)
Destination IP
Address
192.168.3.0
Network Mask
Gateway IP Address
Interface
255.255.255.0 (Standard Class C)
192.168.1.100
LAN
3
Metric
For Router A's Default Route
Destination IP
Address
0.0.0.0
Network Mask
Gateway IP Address
Metric
0.0.0.0
192.168.1.1
2
For Router B's Default Route
Destination IP
Address
0.0.0.0
Network Mask
Gateway IP Address
Interface
0.0.0.0
192.168.2.80
LAN
3
Metric
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9: Operation and Status
Operation
Once both The Load Balancer and the PCs are configured, operation is automatic.
However, there are some situations where additional Internet configuration may be required:
Refer to Chapter 4 - Advanced Features for further details.
System Status
Use the System Status link on the main menu to view this screen.
Figure 9-1: System Status
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Data – System Status
WAN
Information
•
•
Connection Status – Current status – either "Connected" or "Not connected".
Connection Type – The type of connection used – DHCP, Fixed IP, PPPoE,
or PPTP.
•
"Force Renew" button– Only available if using a dynamic IP address
(DHCP). Clicking this button will perform a DHCP "Renew" transaction with
the ISP's DHCP server. This will extend the period for which the current WAN
IP address is allocated to you.
•
IP Address – The IP address of The Load Balancer, as seen from the
Internet. This IP Address is allocated by the ISP (Internet Service Provider)
•
•
Subnet Mask – The Network Mask (Subnet Mask) for the IP Address above.
Domain Name IP Address – The address of the current DNS (Domain Name
Server.
•
MAC Address – The MAC (physical) address of The Load Balancer, as seen
from the Internet.
LAN
Information
•
•
•
IP Address – The LAN IP Address of The Load Balancer.
Subnet Mask – The Network Mask (Subnet Mask) for the IP Address above.
MAC Address – The MAC (physical) address of The Load Balancer, as seen
from the local LAN.
•
DHCP Server – The status of the DHCP Server function - either "Enabled" or
"Disabled".
Device
Information
•
•
•
Firmware Version – Version of the Firmware currently installed.
NAT – Status of the NAT feature – either “Enable” or “Disable”.
Load Balance – Status of the Load Balance feature – either “Enable” or
“Disable”.
•
•
Virtual Server – Status of the Virtual Server feature – either "Enabled" or
"Disabled".
Special Applications – Status of the Special Applications feature – either
"Enabled" or "Disabled".
•
•
•
DMZ – Status of the DMZ feature – either "Enabled" or "Disabled".
Block URL – Status of the Block URL feature – either “Enable” or “Disable”.
Hardware ID – The manufacturers ID for this particular device.
Device
Statistics
•
System UpTime – The time since the system of a device was last
reinitialized.
•
•
CPU Usage – The current usage percentage of CPU.
Memory Usage – The current usage percentage of Memory (Heap & Queue).
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Buttons
•
•
•
Refresh – Update the data on screen.
Restart – Restart (reboot) The Load Balancer.
Restore Factory Defaults – This will delete all existing settings, and restore
the factory default settings. See below for details.
Restore Factory Defaults
When the "Restore Factory Defaults" button on the Status screen above is clicked, the following
screen is displayed.
Figure 9-2: Restore Factory Defaults
If the "Restore Default Value" button on this screen is clicked:
•
•
ALL of your settings will be erased.
The default IP address, password and ALL other settings will be restored to the factory default
values.
•
The DCHP server function will be enabled.
These changes may mean that the current connection is invalid, and you will have to re-connect to
The Load Balancer using its default IP address (192.168.1.1).
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WAN Status
Use the WAN Status link on the main menu to view this screen.
Figure 9-3: WAN Status
Data – System Status
NAT
This section displays data for each WAN port.
Statistics
•
•
•
•
Connection status – This will display either Connected or Not Connected.
Default Loading Share - The default traffic loading between the WAN ports.
Current Loading Share – The current traffic loading between the WAN ports.
Current Loading – The number of sessions, Bytes and Packets currently
being processed on each port.
•
Current Bandwidth – The current Download and Upload speeds on each
WAN port.
•
"Check NAT Detail" will display the NAT Status screen, described below.
Interface
Statistics
This section displays cumulative statistics.
Use the "Restart Counter" button to restart these counters when required.
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NAT Status
This screen is displayed when you click the "Check NAT Detail" button on the WAN Status screen.
Figure 9-4: NAT Status
Data – NAT Status
LAN IP Info
•
•
IP Address – The LAN IP Address of The Load Balancer.
Mask Address – The Network Mask (Subnet Mask) for the IP Address
above.
Active WAN IP Info
There is one (1) row for each active connection. For each connection, the
following data is shown.
•
•
IP Address – The WAN (Internet) IP Address of The Load Balancer.
Mask Address – The Network Mask (Subnet Mask) for the IP Address
above
NAT Timeouts
This displays the current timeout values for TCP and UDP connections.
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TCP Prosperity
NAT Traffic
NAT Connections
Errors
This displays the MSS (Maximum Segment Size) and Maximum Windows
size for TCP packets.
This section displays statistics for both outgoing (LAN to Internet) and
Incoming (Internet to Local) traffic.
This displays the current number of active connections. For further details,
click the "View Connection" list button.
Statistics are displayed for Checksum errors, number of retries, and
number of bad packets.
Misc.
This displays the total IP packets and reserved address.
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Appendix A
Specifications
Model
BR-6624
Dimensions
245mm (W) x 137mm (D) x 30mm (H)
0° C to 40° C
Operating
Temperature
Storage
Temperature
-10° C to 70° C
Network
Protocol:
TCP/IP
Network
6 Ethernet:
Interface:
4 * 10/100BaseT (RJ45) auto-Switching Hub ports for LAN devices
2 * 10/100BaseT (RJ45) for WAN
LEDs
8 LAN
4 WAN
1 Status
1 Power
External Power
Adapter
5 V 1.5A DC
FCC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause
undesired operation.
CE Marking Warning
This is a Class A product. In a domestic environment this product may cause radio interference in
which case the user may be required to take adequate measures.
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Appendix B
Windows TCP/IP Setup
Overview
TCP/IP Settings
If using the default Load Balancer settings, and the default Windows 95/98/ME/2000
TCP/IP settings, no changes need to be made.
•
By default, The Load Balancer will act as a DHCP Server, automatically providing a suitable IP
Address (and related information) to each PC when the PC boots.
•
•
•
For all non-Server versions of Windows, the default TCP/IP setting is to act as a DHCP client.
If you wish to check your TCP/IP settings, the procedure is described in the following sections.
If your LAN has a Router, the LAN Administrator must re-configure the Router itself.
Checking TCP/IP Settings - Windows 9x/ME:
1. Select Control Panel - Network. You should see a screen like the following:
Figure B-1: Network Configuration
2. Select the TCP/IP protocol for your network card.
3. Click on the Properties button. You should then see a screen like the following.
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Figure B-2: IP Address (Win 95)
Ensure your TCP/IP settings are correct, as follows:
Using DHCP
To use DHCP, select the radio button Obtain an IP Address automatically. This is the default
Windows settings.
Restart your PC to ensure it obtains an IP Address from The Load Balancer.
Using "Specify an IP Address"
If your PC is already configured, check with your network administrator before making the following
changes:
•
If the DNS Server fields are empty, select Use the following DNS server addresses, and enter the
DNS address or addresses provided by your ISP, then click OK.
•
On the Gateway tab, enter The Load Balancer's IP address in the New Gateway field and click
Add, as shown below. (Your LAN administrator can advise you of the IP Address they assigned to
The Load Balancer.)
Figure B-3: Gateway Tab (Win 95/98)
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•
On the DNS Configuration tab, ensure Enable DNS is selected. If the DNS Server Search Order
list is empty, enter the DNS address provided by your ISP in the fields beside the Add button,
then click Add.
Figure B-4: DNS Tab (Win 95/98)
Checking TCP/IP Settings - Windows 2000:
1. Select Control Panel - Network and Dial-up Connection.
2. Right click the Local Area Connection icon and select Properties. You should see a screen like
the following:
Figure B-5: Network Configuration (Win 2000)
3. Select the TCP/IP protocol for your network card.
4. Click on the Properties button. You should then see a screen like the following.
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Figure B-6: TCP/IP Properties (Win 2000)
5. Ensure your TCP/IP settings are correct:
Using DHCP
To use DHCP, select the radio button Obtain an IP Address automatically. This is the default
Windows settings.
Restart your PC to ensure it obtains an IP Address from The Load Balancer.
Using a fixed IP Address ("Use the following IP Address")
If your PC is already configured, check with your network administrator before making the following
changes:
•
Enter The Load Balancer's IP address in the Default gateway field and click OK. (Your LAN
administrator can advise you of the IP Address they assigned to The Load Balancer.)
•
If the DNS Server fields are empty, select Use the following DNS server addresses, and enter the
DNS address or addresses provided by your ISP, then click OK.
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Checking TCP/IP Settings - Windows XP:
1. Select Control Panel - Network Connection.
2. Right click the Local Area Connection and choose Properties. You should see a screen like the
following:
Figure B-7: Network Configuration (Windows XP)
3. Select the TCP/IP protocol for your network card.
4. Click on the Properties button. You should then see a screen like the following.
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Figure B-8: TCP/IP Properties (Windows XP)
5. Ensure your TCP/IP settings are correct.
Using DHCP
To use DHCP, select the radio button obtain an IP Address automatically. This is the default
Windows settings.
Restart your PC to ensure it obtains an IP Address from The Load Balancer.
Using a fixed IP Address ("Use the following IP Address")
If your PC is already configured, check with your network administrator before making the following
changes.
•
Enter The Load Balancer's IP address in the Default gateway field and click OK. (Your LAN
administrator can advise you of the IP Address they assigned to The Load Balancer.)
•
If the DNS Server fields are empty, select Use the following DNS server addresses, and enter the
DNS address or addresses provided by your ISP, then click OK.
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Appendix C
Troubleshooting
Overview
This chapter covers some common problems that may be encountered while using The Load
Balancer and some possible solutions to them. If you follow the suggested steps and The Load
Balancer still does not function properly, contact your dealer for further advice.
General Problems
Problem 1:
Can't connect to The Load Balancer to configure it.
Solution 1:
Check the following:
•
•
•
•
The Load Balancer is properly installed, LAN connections are OK, and it is
powered ON.
Ensure that your PC and The Load Balancer are on the same network
segment. (If you don't have a router, this must be the case.)
If your PC is set to "Obtain an IP Address automatically" (DHCP client), restart
it.
If your PC uses a Fixed (Static) IP address, ensure that it is using an IP
Address within the range 192.168.1.2 to 192.168.1.254 and thus compatible
with The Load Balancer’s default IP Address of 192.168.1.1.
Also, the Network Mask should be set to 255.255.255.0 to match The Load
Balancer.
In Windows, you can check these settings by using Control Panel-Network to
check the Properties for the TCP/IP protocol.
Internet Access
Problem 1:
When I enter a URL or IP address I get a time out error.
A number of things could be causing this. Try the following troubleshooting steps.
Solution 1:
•
•
•
Check if other PCs work. If they do, ensure that your PCs IP settings are
correct. If using a Fixed (Static) IP Address, check the Network Mask, Default
gateway and DNS as well as the IP Address.
If the PCs are configured correctly, but still not working, check The Load
Balancer. Ensure that it is connected and ON. Connect to it and check its
settings. (If you can't connect to it, check the LAN and power connections.)
If The Load Balancer is configured correctly, check your Internet connection
(DSL/Cable modem etc) to see that it is working correctly.
Problem 2:
Some applications do not run properly when using The Load Balancer.
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Solution 2:
The Load Balancer processes the data passing through it, so it is not transparent.
Use the Special Applications feature to allow the use of Internet applications which
do not function correctly.
If this does solve the problem you can use the DMZ function. This should work with
most applications, but:
•
•
It is a security risk, since the firewall is disabled for the DMZ PC.
Only one (1) PC can use this feature.
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