Linksys WRT54GL manual What is Network Address Translation and what is it used for?

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Wireless-G Broadband Router

Does the Internet connection of the Router support 100Mbps Ethernet?

The Router’s current hardware design supports up to 100Mbps Ethernet on its Internet port; however, the Internet connection speed will vary depending on the speed of your broadband connection. The Router also supports 100Mbps over the auto-sensing Fast Ethernet 10/100 switch on the LAN side of the Router.

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 PC connected to the private LAN is never transmitted on the Internet. Furthermore, NAT allows the Router to be used with low cost Internet accounts, such as DSL or cable modems, 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 Router 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 Router 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 Router.

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 Router from your ISP.

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 Router?

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

Appendix A: Troubleshooting

69

Frequently Asked Questions

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Contents 802 GHz .11g Wireless- G Word definition How to Use This User GuideCopyright and Trademarks Table of Contents Appendix B Wireless Security Appendix a TroubleshootingCommon Problems and Solutions Frequently Asked Questions Appendix C Upgrading Firmware Appendix D Windows HelpRouter’s Back Panel List of Figures23 Setup Wizard’s Configure Wireless Settings Screen 19 Wireless Tab Wireless Security WPA2 Personal Figure E-5 MAC Address Clone Welcome IntroductionWhat’s in this User Guide? Wireless-G Broadband Router Ad-Hoc versus Infrastructure Mode Planning Your Wireless NetworkSsid service set identifier your wireless network’s name Network TopologyPlanning Your Wireless Network Network Layout Back Panel Getting to Know the Wireless-G Broadband RouterCisco logo Front PanelOverview Connecting the Wireless-G Broadband RouterConnecting Your Network Devices Connecting Another Router Hardware Installation for Connection to Another RouterConnecting Your Network Devices Using the Setup Wizard Setting up the Wireless-G Broadband RouterSetup Wizard’s Disconnect the Modem from PC Screen Setup Wizard’s Connect a Network Cable to a PC Screen Setup Wizard’s Power on the Router Screen Cable or Dhcp Setup Wizard’s Check the Router’s Status ScreenStatic IP DSL PPPoEPptp L2TP Telstra 16 Setup Wizard’s Advanced Internet Settings Telstra Screen18 Setup Wizard’s Configure Wireless Settings Screen 19 Setup Wizard’s SecureEasySetup Screen Using the Router’s SecureEasySetup Feature24 Setup Wizard’s Confirm New Settings Screen 26 Setup Wizard’s Congratulations Screen 27 Setup Wizard’s Configure Wireless Settings Screen Manually Configuring the Router’s Wireless SettingsWPA-PSK WEP 128-Bit WEP 64-Bit33 Setup Wizard’s Congratulations Screen 34 Setup Wizard’s Welcome Start Wizard Screen Using SecureEasySetup to Configure Your Notebook37 Configure Wireless Settings #2 Screen 38 Your Wireless Settings Screen Configuring the Wireless-G Broadband Router Internet Setup Setup Tab Basic SetupPPPoE Connection Type Optional Settings Router IP 12 Setup Tab Ddns Setup Tab Ddns13 Setup Tab MAC Address Clone Setup Tab MAC Address Clone14 Setup Tab Advanced Routing Gateway Setup Tab Advanced RoutingWireless Tab Basic Wireless Settings 17 Wireless Tab Wireless Security WPA Personal Wireless Tab Wireless Security20 Wireless Tab Wireless Security WPA2 Enterprise 21 Wireless Tab Wireless Security Radius 23 Wireless Tab Wireless MAC Filter Wireless Tab Wireless MAC FilterSetting Wireless Tab Advanced Wireless SettingsWireless-G Broadband Router Security Tab VPN Passthrough Security Tab FirewallTo create an Internet Access policy Access Restrictions Tab Internet AccessTo create an Inbound Traffic policy 31 Port Services33 Applications and Gaming Tab Port Range Forward Applications and Gaming Tab Port Range ForwardPort Triggering Applications & Gaming Tab Port TriggeringApplications and Gaming Tab QoS Applications and Gaming Tab DMZDevice Priority Ethernet Port PriorityApplication Port Priority Administration Tab Log Administration Tab Management39 Administration Tab Diagnostics Administration Tab DiagnosticsAdministration Tab Config Management Administration Tab Factory DefaultsAdministration Tab Firmware Upgrade 45 Status Tab Router Status Tab Router46 Status Tab Local Network Status Tab Local Network48 Status Tab Wireless Status Tab WirelessNeed to set a static IP address on a PC Appendix a TroubleshootingCommon Problems and Solutions Wireless-G Broadband Router Open a command prompt. For Windows 98SE and Me TCP Application Start and End Protocol IP Address EnabledCan’t get the Internet game, server, or application to work Wireless-G Broadband Router Need to upgrade the firmware To start over, I need to set the Router to factory defaultFirmware upgrade failed, and/or the Power LED is flashing My DSL service’s PPPoE is always disconnectingPower LED keeps flashing Frequently Asked Questions Does the Router support ICQ send file? What is Network Address Translation and what is it used for?How can I block corrupted FTP downloads? What are the advanced features of the Router? What is DMZ Hosting?What is the Ieee 802.11g standard? Is the Router cross-platform compatible?What Ieee 802.11g features are supported? What is the Ieee 802.11b standard?What Ieee 802.11b features are supported? What is ad-hoc mode?What is DSSS? What is FHSS? And what are their differences? What is ISM band?What is Spread Spectrum? What is a MAC Address? What is WEP?How do I reset the Router? How do I resolve issues with signal loss?Security Threats Facing Wireless Networks Appendix B Wireless SecuritySecurity Precautions Appendix B Wireless Security Wireless-G Broadband Router Appendix C Upgrading Firmware Network Neighborhood/My Network Places Appendix D Windows HelpShared Resources Windows 2000 or XP Instructions Windows 98SE or Me InstructionsFigure E-4 MAC Address Filter List For the Router’s Web-based UtilityAppendix F Glossary Wireless-G Broadband Router Wireless-G Broadband Router Wireless-G Broadband Router Wireless-G Broadband Router Wireless-G Broadband Router Wireless-G Broadband Router Wireless Security Appendix G SpecificationsStandards Operating Temp 0ºC to 40ºC 32ºF to 104ºFStorage Humidity Storage TempOperating Humidity Limited Warranty Appendix H Warranty InformationFCC Statement Appendix I Regulatory InformationSafety Notices Appendix J Contact Information
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