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Page 51 / 71 Scroll up to view Page 46 - 50
45
Appendix A: Troubleshooting
Common Problems and Solutions
Wireless-G Cable Gateway
•
Make sure that your PC is using an IP address within the default range of 192.168.0.2 to 192.168.0.254
and thus compatible with the Gateway default IP Address of 192.168.0.1
•
Also, the Subnet Mask should be set to 255.255.255.0 to match the Gateway. For the Gateway, you can
check these settings by using Control Panel-Network to check the Properties for the TCP/IP protocol.
4.
The Power LED stays red when it shouldn’t.
•
The Power LED lights up when the device is first powered up. The system will boot up itself and check for
proper operation. After finishing the checking procedure, the Power LED turns green to show the system
is working fine. If the LED remains red after this time, the device is not working properly.
5.
The Online LED will not go solid.
•
Verify that the coaxial cable is firmly plugged into the Gateway’s cable port, with the other end plugged
directly into the Cable wall jack.
•
Verify that your Cable account is active.
•
Verify that your cable ISP has been given the correct MAC Address for the cable modem function.
6.
I can’t access the Internet from the Gateway.
•
Check if both ends of the network cable and power adapter are properly connected. Check if the status
LEDs on the front panel are functioning properly.
•
If using Windows 95, 98 or Me, check the TCP/IP setup on the client side. Run winipcfg by clicking on the
Start button, selecting Run, and typing winipcfg in the Run field. Press Enter.
The PC should have an IP
address of 192.168.0.xxx (“xxx” is from 2 to 254.). The Subnet Mask is 255.255.255.0; the default
gateway IP should be the Gateway’s IP Address, and check that the DNS is correct.
•
Check the same setup values on the Gateway’s Status page.
7.
When I enter a URL or IP address, I get a time out error.
•
Check to see if your other PCs work. If they do, verify that your PC’s IP settings are correct (IP address,
Subnet Mask, Default Gateway, and DNS)
•
If the PCs are configured correctly, but still not working, check the Gateway. Make sure that it is
connected and ON. Connect to it and check its settings. (If you cannot connect to it, check the LAN and
power connections.)
•
If the Gateway is configured correctly, check your Internet connection to see that it is working correctly.
•
Manually configure the TCP/IP with a DNS address provided by your ISP.
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46
Appendix A: Troubleshooting
Frequently Asked Questions
Wireless-G Cable Gateway
Frequently Asked Questions
What is the maximum number of IP addresses that the Gateway will support?
The Gateway will support up to 253 IP addresses.
Is IPSec Passthrough supported by the Gateway?
Yes, it is a built-in feature that is enabled by default.
Does the Gateway support IPX or AppleTalk?
No. TCP/IP is the only protocol standard for the Internet and has become the global standard for communications.
IPX, a NetWare communications protocol used only to route messages from one node to another, and AppleTalk, a
communications protocol used on Apple and Macintosh networks, can be used for LAN to LAN connections, but
those protocols cannot connect from the Internet to a LAN.
What is Network Address Translation and what is it used for?
Network Address Translation (NAT) translates multiple IP addresses on the private LAN to one public address that
is sent out to the Internet. This adds a level of security since the address of a computer connected to the private
LAN is never transmitted on the Internet. Furthermore, NAT allows the Gateway to be used with low cost Internet
accounts when only one TCP/IP address is provided by the ISP. The user may have many private addresses behind
this single address provided by the ISP.
Does the Gateway support any operating system other than Windows 98SE, Windows Millennium,
Windows 2000, or Windows XP?
Yes, but Linksys does not, at this time, provide technical support for setup, configuration or troubleshooting of
any non-Windows operating systems.
Does the Gateway support ICQ send file?
Yes, with the following fix: click ICQ menu -> preference -> connections tab->, and check I am behind a firewall
or proxy. Then set the firewall time-out to 80 seconds in the firewall setting. The Internet user can then send a file
to a user behind the Gateway.
I set up an Unreal Tournament Server, but others on the LAN cannot join. What do I need to do?
If you have a dedicated Unreal Tournament server running, you need to create a static IP for each of the LAN
computers and forward ports 7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. You can
also use a port forwarding range of 7777 ~ 27900. If you want to use the UT Server Admin, forward another port.
(Port 8080 usually works well but is used for remote admin. You may have to disable this.) Then in the
[UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to match the mapped port above) and
ServerName to the IP assigned to the Gateway from your ISP.
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47
Appendix A: Troubleshooting
Frequently Asked Questions
Wireless-G Cable Gateway
Can multiple gamers on the LAN get on one game server and play simultaneously with just one public IP
address?
It depends on which network game or what kind of game server you are using.
For example, Unreal Tournament
supports multi-login with one public IP.
How do I get Half-Life: Team Fortress to work with the Gateway?
The default client port for Half-Life is 27005.
The computers on your LAN need to have “+clientport 2700x”
added to the HL shortcut command line; the x would be 6, 7, 8, and on up. This lets multiple computers connect
to the same server. One problem: Version 1.0.1.6 won’t let multiple computers with the same CD key connect at
the same time, even if on the same LAN (not a problem with 1.0.1.3).
As far as hosting games, the HL server does
not need to be in the DMZ. Just forward port 27015 to the local IP address of the server computer.
The web page hangs; downloads are corrupt, or nothing but junk characters are being displayed on the
screen. What do I need to do?
Force your Ethernet adapter to 10Mbps or half duplex mode, and turn off the “Auto-negotiate” feature of your
Ethernet adapter as a temporary measure. (Please look at the Network Control Panel in your Ethernet adapter’s
Advanced Properties tab.) Make sure that your proxy setting is disabled in the browser. Check our website at
www.linksys.com for more information.
If all else fails in the installation, what can I do?
Reset the Gateway by holding down the reset button until the Power LED fully turns on and off. Reset your
Gateway by powering the unit off and then on.
Will the Gateway function in a Macintosh environment?
Yes, but the Gateway’s setup pages are accessible only through Internet Explorer 4.0 or Netscape Navigator 4.0 or
higher for Macintosh.
With which type of firewall is the Gateway equipped?
The Gateway uses NAT and TCP/IP port inspections. It also has SPI (Stateful Packet Inspection).
I am not able to get the web configuration screen for the Gateway.
What can I do?
You may have to remove the proxy settings on your Internet browser, e.g., Netscape Navigator or Internet
Explorer. Check with your browser documentation, and make sure that your browser is set to connect directly and
that any dial-up is disabled. For Internet Explorer, click Tools, Internet Options, and then the Connection tab. Make
sure that Internet Explorer is set to Never dial a connection. For Netscape Navigator, click Edit, Preferences,
Advanced, and Proxy. Make sure that Netscape Navigator is set to Direct connection to the Internet.
What is DMZ Hosting?
Demilitarized Zone (DMZ) allows one IP address (computer) to be exposed to the Internet. Some applications
require multiple TCP/IP ports to be open.
It is recommended that you set your computer with a static IP if you
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48
Appendix A: Troubleshooting
Frequently Asked Questions
Wireless-G Cable Gateway
want to use DMZ Hosting. To get the LAN IP address, see “Appendix C: Finding the MAC Address and IP Address
for Your Ethernet Adapter.”
If DMZ Hosting is used, does the exposed user share the public IP with the Gateway?
No.
Does the Gateway pass PPTP packets or actively route PPTP sessions?
The Gateway allows PPTP packets to pass through.
Is the Gateway cross-platform compatible?
Any platform that supports Ethernet and TCP/IP is compatible with the Gateway.
How many ports can be simultaneously forwarded?
Theoretically, the Gateway can establish 520 sessions at the same time, but you can only forward 10 ranges of
ports.
Does the Gateway replace a modem?
Is there a cable modem in the Gateway?
Yes. The Gateway has an integrated cable modem, so this product will replace your current cable modem.
What are the advanced features of the Gateway?
The Gateway’s advanced features include Filters, Forwarding, and DMZ host.
How do I get mIRC to work with the Gateway?
Set port forwarding to 113 for the computer on which you are using mIRC.
If you are experiencing difficulty after
setting the port forwarding, try changing the Direct Client-to-Client (DCC) settings to a range from 1024 to 1030
on the DCC option and Forwarding page of the Web-based Setup Utility.
What is the IEEE 802.11g standard?
It is one of the IEEE standards for wireless networks. The 802.11g standard allows wireless networking hardware
from different manufacturers to communicate, provided that the hardware complies with the 802.11g standard.
The 802.11g standard states a maximum data transfer rate of 54Mbps and an operating frequency of 2.4GHz.
What is ad-hoc mode?
When a wireless network is set to ad-hoc mode, the wireless-equipped computers are configured to
communicate directly with each other, peer-to-peer without the use of an access point. Ad-hoc mode is not used
with the Gateway.
What is infrastructure mode?
When a wireless network is set to infrastructure mode, the wireless network is configured to communicate with a
network through a wireless access point. Infrastructure mode is used with the Gateway.
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49
Appendix A: Troubleshooting
Frequently Asked Questions
Wireless-G Cable Gateway
What is a MAC Address?
The Media Access Control (MAC) address is a unique number assigned by the manufacturer to any Ethernet
networking device, such as a network adapter, that allows the network to identify it at the hardware level. For all
practical purposes, this number is usually permanent. Unlike IP addresses, which can change every time a
computer logs onto the network, the MAC address of a device stays the same, making it a valuable identifier for
the network.

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