™
GUESTGATE
INTERNET
ACCESS DEVICE
USER MANUAL
MODEL 523240
INT-523240-UM-0606-02
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1. INTRODUCTION
Congratulations on your purchase of the INTELLINET NETWORK SOLUTIONS
GUESTGATE Internet Access Device, Model 523240. The GUESTGATE
™
connects guests to your network, allowing them to access only the Internet (Web,
email, chat and other applications). GUESTGATE protects your existing network
from unauthorized access by the connected guest computers and, if required,
even provides shielding for the guest computers among themselves. Furthermore,
GUESTGATE features enhanced IP PnP (Plug and Play) technology: It automatically
adjusts to the guest computer’s TCP/IP settings, eliminating time-consuming client IP
reconfigurations.
GUESTGATE seamlessly integrates into your existing network and, in most
applications, a configuration of GUESTGATE is not necessary: GUESTGATE
provides the core functionality right out of the box.
FUNCTION DESCRIPTION
Internet Access for Guests
GUESTGATE is primarily designed to provide configuration-free Internet
access for your guests. GUESTGATE uses the existing Internet connection of
your network to provide Web and email access for computers connected in a
conference room, a hotel or a public place with wireless network connectivity.
GUESTGATE does not stop here, however. It addresses security-related
concerns of the network administrator by shielding the existing network from
access attempts from the connected guests. In short, this means that guests can
access the Internet, but your own network — i.e., your network file server, email
or application server — is off limits.
Password-Protected Internet Access for Guests
You, the network administrator, can make it mandatory for your guests to enter
a password before Internet access is granted. This is an important function
in case you offer Internet access as a paid service or in situations where an
open, unprotected wireless access point is connected to GUESTGATE and you
wish to keep unauthorized users from using your bandwidth.
Configurable Welcome Screen for Your Guests
You can set up your own welcome screen in seconds. Change the wording
and formatting, and upload your own banner image. The welcome screen is
displayed when a guest connects to the Internet for the first time. The welcome
screen can be utilized to make the guest agree to your terms and conditions,
and can be completely deactivated if required.
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IP PnP
In many situations, it is necessary for the network administrator to change the
TCP/IP settings of guest computers because the existing settings are not
compatible or your network has advanced requirements. GUESTGATE
eliminates this step completely. GUESTGATE automatically adjusts to the guest
computer’s TCP/IP settings, providing a true zero guest configuration.
Bandwidth Control
GUESTGATE controls how much of your Internet connection speed is dedicated
to the guest network. Upload and download bandwidth can be configured
individually.
True Layer 3 Virtual VLAN Function
In a public location with a public wireless access point, there are often
concerns about security. GUESTGATE not only protects the host network from
unauthorized access by your guests, it takes security one step further. When
the “separate network for each client” option is activated, no guest computer
can access any other guest computer. In this mode, GUESTGATE randomly
assigns each guest computer its own network. This option is activated by
default.
Packet Filter
Block access to certain Web sites or entire IP ranges.
4-Port 10/100 Auto-Sensing LAN Switch
GUESTGATE provides four 10/100 Mbps LAN switch ports for the connection
of PCs, notebooks, or other switches or wireless access points.
Web-Based Administrator Interface
The configuration is fully Web-browser based. For security reasons, the Web
administrator menu is only accessible from the host network.
Firmware Updates via Web Browser
Quickly and conveniently upgrade firmware of the GUESTGATE Internet Access
Device from INTELLINET NETWORK SOLUTIONS with the Web browser of
your choice.
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INSTALLATION EXAMPLES
GUESTGATE in a SOHO Network Environment
This is a typical
setup in which
the Internet
connection is
established
through an NAT
router with an
integrated
firewall.
GUESTGATE in an SMB Environment
In larger networks,
GUESTGATE
connects to any
available switch
port behind the
firewall/gateway/
router.
GUESTGATE FUNCTION BASICS
Ports
GUESTGATE features a total of five 10/100 RJ-45 ports. One port is for the
connection of GUESTGATE to the host network (host port), four ports are
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available for guest connections (guest ports). The guest ports can be connected
to hubs, switches, wireless access points, PCs or notebooks.
Host Ports
By default, GUESTGATE obtains an IP address from a DHCP server already
present in the network. GUESTGATE analyzes the network and obtains all
information necessary for Internet access. The DHCP server log reveals the
host IP address of GUESTGATE.
In the event that no DHCP server is present, GUESTGATE reverts to its default IP
address: 192.168.2.1. In this case, a manual configuration of the host IP
settings is necessary.
Guest Ports
GUESTGATE assigns IP addresses to the connected guest computers. IP PnP
technology ensures that no configuration on the guest computer is necessary.
The default DHCP IP address range is 172.16.xxx. Changing the guest IP
settings is possible via the Web administration interface.
Guest Ports with Virtual VLAN Enabled
If Virtual VLAN is enabled, GUESTGATE assigns a different IP network (subnet)
to each connected guest computer. Since this assignment is random, it makes it
virtually impossible for a hacker to guess the other guest computer’s IP settings
to try to gain access. Virtual VLAN is enabled by default. It can be disabled in
the guest configuration screen of the administrator Web interface. The option is
“separate network for each client (automatic).”
Accessing the Administrator Web Interface
The configuration of GUESTGATE is entirely Web based. Any standard Web
browser is supported. For security reasons, GUESTGATE can only be
configured from the host port. GUESTGATE rejects all connection attempts
which originated from the guest side.
Internet Access for Guests and Welcome Page
When a guest computer tries to access the Internet for the first time, a welcome
page is shown in the Web browser. This welcome page can be configured
and altered in the administrator Web interface. Guests have to accept the
terms and conditions in order to access the Internet. If the guest password
option is enabled, a password must be provided by the guest to gain Internet
access. This authorization procedure is only required once. GUESTGATE
memorizes all authorized guest computers until GUESTGATE is restarted. After
a restart of GUESTGATE, guests again will be shown the welcome page.
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2. INSTALLATION
RECOMMENDED SETUP
This setup method for the INTELLINET NETWORK SOLUTIONS GUESTGATE
Internet Access Device assumes that a DHCP server such as a router is present
in your network.
Connecting to the Host Network
Connect a standard RJ-45 network cable to GUESTGATE’s host port and to an
RJ-45 port on your existing network (Ethernet switch port, router switch port, etc.).
Turn on GUESTGATE and verify that the network connection is active (host LED
must be lit on GUESTGATE). NOTE: The startup process takes up to 30 seconds.
Connecting Guests
Using standard RJ-45 network cables, you can now connect PCs, notebooks,
Ethernet switches, hubs or wireless access points to GUESTGATE’s guest ports.
Each port has its own status LED. Verify that the network connection is active
on each port you connect.
Testing Internet Access
Start up a PC or notebook that is connected to one of the guest ports. Launch
a Web browser and open an Internet Web site, such as http://www.intellinet-
network.com. You will then see GUESTGATE’s welcome page.
Provide the
password
if required
and click on
“continue.”
You will then
be forwarded
to the Web
page you
originally
entered in the
Web browser’s address bar.
NOTE: In order to get Internet access, you must first open a Web browser and
open a Web page. Other applications, such as chat programs (ICQ, MSN
Messenger, Skype, etc.), will not be able to connect to the Internet unless the
welcome page has been confirmed in the Web browser.
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Accessing the Administrator Web Interface from the Host
Interface
1. Open the log of your DHCP server to find the IP address of GUESTGATE.
GUESTGATE’s MAC (media access control) address can be found on the
bottom of the device. Find this MAC address in your DHCP server’s client
log to determine the IP address.
Below is an example of a DHCP log file:
2. Launch your Web browser and open the IP address shown in the DHCP
client log. You will then see the administrator Web interface. The default
password is 1234.
Changing the Administrator Password
1. Click on “Device Settings.”
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2. Enter the old password (1234).
3. Enter a new password (up to 20 characters long).
4. Retype the new password.
5. Click on “Exit” (upper right corner).
6. Check “Save settings.”
7. Check “Reboot device.”
8. Click on “Exit.”
GUESTGATE now reboots. This takes about 25 seconds. After the reboot, you’ll be
redirected to GUESTGATE’s login page. You can now login with the new password.
NOTE: The administrator Web Interface is designed to let you make changes
on all four screens without saving each change individually. Once you are done
programming GUESTGATE, you need to click on “Exit” and reboot the device.
The changes will only take effect after GUESTGATE has been rebooted.
Closing the Web browser without saving the configuration changes will result in
a loss of the changed configuration.
If you’ve successfully performed the above steps, you can skip the next section.
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ADVANCED SETUP
The standard installation of GUESTGATE is based on the assumption that a
DHCP server is present in your network. If this is not the case, you can still
configure GUESTGATE manually. To do this, you need to turn GUESTGATE
on while it is disconnected from the network. If no DHCP server can be
found after three minutes, GUESTGATE will fall back to its default IP address:
192.168.2.1.
Advanced setup requires:
• A network adapter correctly installed in your computer;
• User rights that allow manual configuration of TCP/IP-related settings on your
PC; and
• GUESTGATE connected via an RJ-45 cable to the network adapter in your
PC.
Changing the IP Address of Your PC
1. Click on “Start” —> “Settings” —> “Control Panel.”
2. Double-click the “Network Connections” icon.
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3. Right-click the “Local Area Connection” icon and select “Properties” from the
context menu.
4. In the “Local Area Connection Properties” window, highlight “Internet
Protocol (TCP/IP)” and click on “Properties.” When the “Internet Protocol
(TCP/IP) Properties” window opens, make the changes as shown.
5. Click “OK” when done.
6. Close the previous windows by clicking “OK,” as well.
Your TCP/IP settings are now compatible to GUESTGATE.
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Connecting to GUESTGATE via a Web Browser
1. Start your Web browser and open the address http://192.168.2.1. The
administrator Web interface login screen then appears.
2. Enter the
password
(1234)
and click
on “Login.”
NOTE: At this point, it is recommended that you change the administrator
password as described in the previous section.
Host Configuration
1. Click on “Host Configuration.”
2. With the Configuration Host window displayed, specify the device IP address,
IP netmask, IP gateway (Internet connection gateway, router) and DNS server.
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Device IP Address: A free IP address in your network. This is the IP address
you assign to GUESTGATE.
IP Netmask: Enter the same netmask (or subnet mask) you use in your network.
IP Gateway: The IP address of your Internet gateway (such as a router).
DNS Server: Domain name service as required by your ISP. You can add
multiple DNS servers by separating the different entries with a space.
Administrator IP Address: When specified, only this IP address is allowed
to connect to the administrator interface of GUESTGATE. The function “Use
this client’s IP address” automatically populates the field with the IP address
of the computer currently used to connect to the administrator menu.
When done, click
on “Exit” (upper
right corner).
3. Click on “Exit” to save
the configuration and
restart GUESTGATE.
3. CONFIGURATION OPTIONS
STATUS SCREEN
The status screen shows three types of information.
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Network Information: Basic information about the host network interface.
Various Information: Display of the current firmware version, the system’s
uptime and the status of the password-protected Internet access.
Connected Guest Computers: GUESTGATE shows all of the connected guest
computers, including the MAC address, the assigned IP address and the
connection time. Click on “[Details]” to view individual statistics for each
connected PC, including the bandwidth consumed (Mbytes).
GUEST CONFIGURATION SCREEN
This page shows the configuration options for the connected guest computers.
Configuration Guest
Option “separate network for each client (automatic)”: This operational
mode is called “Virtual VLAN.” If this option is activated, GUESTGATE
randomly assigns different networks to each connected guest computer. This
option should be activated if you want to prevent guest computers from seeing
and accessing each other (Virtual VLAN = on). It is activated by default.
Option “same network for all clients (automatic)”: GUESTGATE automatically
assigns IP addresses to the guest computers. All guest computers operate in the
same network (Virtual VLAN = off).
Option “same network for all clients (enter manually)”: If this option is
enabled, you can manually define the network for the connected guest
computers (Virtual VLAN = off).
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Welcome Screen
Enable or disable the welcome page for guests. (Default = enabled.)
Guest Password
If you require your guests to enter a password to access the Internet, you can
define it here. If left empty, no password is required (Default = no password).
Bandwidth Download Limit
Control the maximum download speed available for the connected guest
computers here. Available options are from 32 kbps (kilobits per second) up to
2048 kbps (= 2 Megabits per second; Default = unlimited).
Bandwidth Upload Limit
Bandwidth control for the upload speed (sending files to the Internet) is here,
with options the same as above.
Trusted Ethernet Addresses
If you wish to permanently authenticate a guest computer, you can add its
MAC address to GUESTGATE’s configuration. GUESTGATE will not show the
welcome page to any computer that has been entered here.
You can obtain the MAC address of a connected computer from the
GUESTGATE status screen, or you can perform the following steps (example:
Windows 2000/XP).
1. Click on “Start” —> “Run.”
2. Type in “cmd”; press “Enter.”
3. At the DOS command prompt, type “ipconfig /all” and press “Enter.”
Example Output
The physical address is the MAC address that needs to be entered in the
configuration of GUESTGATE.
The format is: xx:xx:xx:xx:xx:xx (not xx-xx-xx-xx-xx-xx).
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HOST CONFIGURATION SCREEN
This page shows the configuration options for the host interface of GUESTGATE.
Configuration Host
Option “DHCP”: GUESTGATE automatically receives the IP address, netmask,
gateway and DNS server information from the DHCP server in your network,
typically a router. This is the default and recommended setting.
Option “static”: In larger networks, a manual configuration of the IP settings
may be necessary. Select “static” and enter the IP address, netmask, gateway
IP address and DNS server IP addresses manually.
Multiple DNS servers can be entered by separating them with a space; e.g.,
111.222.333.444 999.888.777.666.
Administrator IP Address: Restrict access to GUESTGATE’s administration menu
to the IP address you enter in this field. This can be any local or public IP address.
Packet Filter
Blocked Ports: If you wish to block certain IP addresses, domain names or an
entire network, you can enter this here.
“Add Host Address” is used to enter domain names such as guestgate.com or
intellinet-network.com.
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“Add Network Address” is used to enter an IP address. To specify the range,
you can select the appropriate network mask from the drop-down list.
Blocked Addresses: This option lets you specify which outgoing TCP/IP ports
you wish to block. Enter the port number and click on “Add Port.” GUESTGATE
blocks both TCP and UDP protocols.
A list of common service ports can be found in the appendix at the back of this
manual. If you wish to remove a port, simply select the desired port from the
drop-down list and click on “Remove.”
NOTE: You can only add and remove single ports. Port ranges are not supported.
Permitted Addresses: By default, GUESTGATE blocks access to all PCs in the
host network. This function lets you define exceptions.
Add Host Address: Enter a single IP address — e.g., the IP address of your
Intranet Web server — and click on “Add Host.” Repeat this step if you wish to
enter more IP addresses.
Add Network Address: Enter an IP address and a subnet mask to define a
range of IP addresses permitted to your guests.
WELCOME SCREEN
This page shows the welcome screen configuration options of GUESTGATE.
Banner Graphic
You can replace the default banner image with your own image, such as the
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logo of your company. Click on “Browser” to select the file you wish to
upload. Click on “Upload” to replace the default banner image. After the
upload, the text “Default Image” changes into “Custom Image.”
NOTE: The banner image file type must be in the form of a JPG, GIF or PNG;
the image size must not exceed 60 kb; the image dimensions, though not
limited, should not exceed 1024 pixels. The banner image only displays on the
guest welcome screen. It does not replace the banner in the administrator Web
interface.
Welcome Text
You can overwrite the default text with your own custom text. GUESTGATE
supports HTML tags to format your text. Below is a small selection.
• <strong>bold text</strong>
• <font color = red>red text</font>
• <font color = #00ff00”>green text</font>
• <u>underlined text</u>
• <u><strong><fontcolor=red>redboldunderlinedtext</font></strong></u>
Other HTML commands, such as <TABLE>, <tr>, <td> and <img> tags and
many more, are also supported.
DEVICE SETTINGS SCREEN
This page shows the device settings of GUESTGATE.
Admin Password
To change the administrator password, you need to enter the old password and
the new password. You also must confirm the new password by retyping it.
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Click on “Change” to save the changes. GUESTGATE’s default password is
1234. The password can be up to 20 characters in length.
Firmware
To benefit from new functions in the future, you may wish to upgrade the
firmware. More information on how to obtain and upgrade firmware appears
in the next section.
FIRMWARE UPGRADE PROCESS
Where to Obtain New Firmware
There are two ways to find out if new firmware is available for the INTELLINET
NETWORK SOLUTIONS GUESTGATE Internet Access Device.
• Check GUESTGATE’s status page. GUESTGATE checks if new firmware is
available whenever
you login to the
administrator menu.
If a new version is
found, a test
message appears on the status screen. Click on the link “Click here for more
information” to open the Web page with details, instructions and the new
firmware image.
• Check the download section manually at http://www.guestgate.com.
Upgrade Process
Open the device settings screen of the administrator menu.
Click on “Browse” to select the new firmware image, then click on “Install” to
begin the upgrade process. The upgrade may take several minutes depending
on your connection speed to GUESTGATE.
GUESTGATE will automatically restart after the upgrade process. After you
see the restart message, you need to wait one minute before you can access
GUESTGATE again.
IMPORTANT: The upgrade process must not be interrupted! A network
connection failure or a crash of your local computer during the upgrade
process will result in the destruction of GUESTGATE. Ideally, you want to
perform the upgrade from within the local host network whenever possible.
EXIT SCREEN
This page lets you save the new configuration.
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Save Settings
All changes you made to the configuration will only be memorized if you save
the changes by activating this check box. If you made changes in some of the
configuration screens
and fail to perform
this step before
closing the Web
browser, all changes
will be lost.
Reboot Device
In order to activate the new configuration, you must also check this box.
NOTE: Saving the settings does not automatically activate them. It is necessary
to reboot GUESTGATE for the new configuration to become active. This way,
you can make changes to the configuration (e.g., a new guest password) now
and activate them at a later time. Rebooting GUESTGATE will also enforce a
re-authentication of all connected guest computers.
4. QUESTIONS & ANSWERS
Q: I have a server in my network that my guests are not allowed to access.
Which settings do I need to activate in GUESTGATE to prevent my guests
from accessing this server?
A: You do not need to activate any settings. GUESTGATE provides this
functionality by default. Should a guest try to access a server or computer
in your network, GUESTGATE will deny the request and display a warning
message in the guest’s Web browser window.
Q: What if I want to allow my guests access to my network (e.g., my Intranet
Web server)?
A: Add the IP address of your Intranet server in GUESTGATE’s host configuration
page under “Permit Addresses” and GUESTGATE will no longer block
access to that server.
Q: Can I control the amount of bandwidth available for my guest network?
A: Yes. Upload and download bandwidth can be controlled in the guest
configuration section of the Administrator Web Interface.
Q: I wish to display my own welcome page for my guests. Can I change the
default welcome page?
A: Yes. The welcome page can be changed in the welcome page
configuration section of the administrator Web interface. You can change
the welcome message and upload your own banner image.
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Q: Can I use HTML code in my custom welcome page?
A: Yes. GUESTGATE does not limit you in any way. If you are an HTML Web
developer, you can create an enhanced welcome page simply by pasting
the HTML code into the welcome page configuration field.
Q: Does GUESTGATE support PHP, ASP or Perl?
A: No. GUESTGATE does not support server-side scripting.
Q: I have changed some settings in the administrator Web interface, but the
changes show no effect. Why?
A: You may have forgotten to save the configuration through the exit page of
the administrator Web interface.
Q: What is the option “separate network for each client (automatic)” in the
guest configuration screen used for?
A: This is the Virtual VLAN function of GUESTGATE. If this option is activated,
GUESTGATE will prevent the connected guest computers from accessing
each other by assigning random TCP/IP network settings to the guest
computers. This way, each guest operates in its own “Virtual LAN.” The
two examples below illustrate how it works.
1. Guest configuration set to “same network for all clients (automatic)”:
Guest computer 1 receives IP address 172.16.254.253.
Guest computer 2 receives IP address 172.16.254.252.
Guest computer 3 receives IP address 172.16.254.251.
[…]
In this mode, all guest computers operate in one network and are
therefore able to access each other. This is the standard mode of
virtually any router and DHCP server on the market.
2. Guest configuration set to “separate network for each client (automatic)”
(Virtual VLAN enabled):
Guest computer 1 receives IP address 192.168.17.42.
Guest computer 2 receives IP address 172.16.25.12.
Guest computer 3 receives IP address 10.10.8.178.
Guest computer 4 receives IP address 10.10.4.18.
Guest computer 5 receives IP address 192.168.8.178.
[…]
In this mode, each guest computer operates in its own network and
therefore can not access any other device except for the Internet. Since
this function is random, it is next to impossible for an attacker to know or
guess which IP addresses the other guests have been assigned, making
a hacking attempt more difficult.
If you are concerned with the security of your guests or are worried
about potential liability issues, you should activate this option (it is
activated by default).
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Q: Some of my guests wish to play a network game or share files and folders,
but that doesn’t work. Why can’t the connected guest computers
communicate with each other?
A: Because, by default, Virtual VLAN is activated. You need to disable it to
allow network communication between the connected guest computers.
(See the previous Q&A.)
Q: How often does a guest need to authenticate at the welcome page?
A: Only once. As long as GUESTGATE is not restarted, the guest will never
again be prompted to enter the password and agree to your terms and
conditions.
Q: Can I access the administrator menu of GUESTGATE from one of the guest
ports?
A: No. For security reasons this is not possible. Access to the administrator
menu can only be gained through the host port.
5. SERVICE & SUPPORT
Additional information about GUESTGATE is available on the web at
http://www.guestgate.com/.
On this page you can:
1. Find answers to common questions (FAQ);
2. Obtain the latest firmware versions; and
3. Get in contact with our technical support team.
In case of technical problems, we always recommend checking with your
local authorized INTELLINET NETWORK SOLUTIONS dealer first. Contact
with our technical support team can be made on the Web site, as well.
6. SPECIFICATIONS
• Guest network: 1 x 10/100 Mbps RJ-45 port
• Host network: 4 x 10/100 Mbps RJ-45 ports
• Reset button
• LEDs: 1 x Power; 1 x Link/Activity for host network; 4 x Link/Activity for
guest ports
• AC adapter 12 V / 0.5 A
• Dimensions: H: 45 mm; W: 220 mm; D: 120 mm
• Humidity: 0 – 90% (non-condensing)
• Temperature: 10 – 55°C
• EMI certification: FCC Class B, CE Mark, C-T
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7. APPENDIX
Below is a sample list of common TCP/IP service ports that can be entered in
the host configuration of GUESTGATE to block access to certain services.
Port Number
21
Service Name / Description
FTP
22
SSH (Secure Shell)
23
Telnet
25
69
70
SMTP (Outgoing Mail, Sendmail Server Port)
TFTP (Trivial File Transfer Protocol)
Gopher
79
Finger
80
110
HTTP (Standard Web Port for Web Sites)
POP3 (Incoming Mail)
115
119
SFTP (Simple File Transfer Protocol)
NNTP (Newsgroups)
123
135
137, 138, 139
143
NTP (Network Time Protocol)
RPC service, used for NET SEND command
NETBIOS (Filesharing, MS Windows Network)
IMAP (Interim Mail Access Protocol)
SNMP (Simple Network Management Protocol)
IRC (Internet Relay Chat)
161
194, 6665-6669
443
514
515
631
HTTS (Secure Web Transfer, used by SSL)
SHELL
LPR (Line Printer Remote), LPD (Line Printer Daemon)
IPP (Internet Printing Protocol)
1080, 3127, 3128, 10080 Trojan: Used by MyDoom
1723
1863
PPTP (used for VPN Connections)
MSN Messenger
2535, 2745, 8866
3389
3410
Trojan: Used by Beagle
Windows XP Remote Desktop Port
Trojan: OptixPro, also used by NetworkLens SSL Event
iTUNES by Apple, DAAP
3689
4899
RADMIN, Remote Control
5000, 5001
5100
YAHOO Messenger Voice Chat
YAHOO Messenger Video (Webcam)
5190, 5191, 5192, 5193 AOL (America On Line via TCP)
5554
Trojan: Sasser Family, also used for SGI ESP HTTP.
5800+, 5900+
12345
VNC
Trojan: Used by Netbus, Italk Chat System and TrendMicro
OfficeScan antivirus
27374
Trojan: Used by SubSeven
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APPENDIX
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