Linksys AG041 (EU) manual What is Network Address Translation and what is it used for?

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ADSL Gateway with 4-Port Switch

Does the LAN connection of the Gateway support 100Mbps Ethernet?

The Gateway supports 100Mbps over the auto-sensing Fast Ethernet 10/100 switch on the LAN side of the

Gateway.

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.

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.

Appendix A: Troubleshooting

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Frequently Asked Questions

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Contents Adsl Gateway Copyright and Trademarks How to Use this GuideWord definition Table of Contents Adsl Gateway with 4-Port Switch A Network with the Gateway List of Figures23 Applications & Gaming Port Triggering Figure B-23 New Preshared Key Welcome IntroductionWhat’s in this Guide? Adsl Gateway with 4-Port Switch What’s an IP Address? Planning your NetworkGateway’s Functions IP AddressesEncryption encoding data transmitted in a network What is a VPN?Dhcp Dynamic Host Configuration Protocol Servers Dynamic IP AddressesVPN Gateway to VPN Gateway Why do I need a VPN?VPN Gateway-to-VPN Gateway Back Panel Getting to Know the Adsl GatewayDSL Front PanelOverview Connecting the Adsl GatewayConnecting to a Computer ISP a company that provides access to the InternetConnect power Security Configuring the Adsl GatewaySetup Access RestrictionsStatus How to Access the Web-based UtilityAdministration Applications & GamingBasic Setup Setup TabInternet Setup Static IP RFC 1483 Bridged Dynamic IPRFC 2516 PPPoE RFC 1483 RoutedRFC 2364 PPPoA Bridged Mode OnlyNetwork Setup Optional Settings Required by some ISPsDynDNS.org DdnsAdvanced Routing Advanced RoutingStatic Routing 12 Routing Table Firewall Security TabSoftware instructions for the computer VPN15 VPN with Manual Key Management Phase Advanced VPN Tunnel SetupConfiguring the Adsl Gateway Security Tab Internet Access Access Restrictions Tab19 List of PCs Single Port Forwarding Applications and Gaming TabPort Triggering Port Range ForwardingDMZ Gateway Access Administration TabManagement UPnP Smtp the standard e-mail protocol on the Internet ReportingLog Email AlertsFactory Defaults DiagnosticsPing Test Ping Test Parameters 29 Administration tab Firmware Upgrade Firmware UpgradeInternet Connections Status TabGateway Gateway InformationDSL Connection Local NetworkCommon Problems and Solutions Appendix a TroubleshootingNeed to set a static IP address on a computer Want to test my Internet connection Open a command prompt. For Windows 98 and Me Adsl Gateway with 4-Port Switch TCP UDP Can’t get the Internet game, server, or application to work VPN IpsecNeed to upgrade the firmware To start over, I need to set the Gateway to factory defaultFirmware upgrade failed, and/or the Power LED is flashing My DSL service’s PPPoE is always disconnecting Is IPSec Passthrough supported by the Gateway? Frequently Asked QuestionsPower LED flashes continuously Where is the Gateway installed on the network?Does the Gateway support ICQ send file? What is Network Address Translation and what is it used for?What is DMZ Hosting? Is the Gateway cross-platform compatible? What are the advanced features of the Gateway?What is a MAC Address? How do I reset the Gateway?Environment IntroductionFilter List 1 win-Router How to Establish a Secure IPSec TunnelCreate an IPSec Policy Build Filter ListsFigure B-4 IP Filter LIst Filter List 2 Router -winFigure B-7 IP Filter List Tunnel 1 win-Router Configure Individual Tunnel RulesFigure B-13 Authentication Methods Tunnel 2 Router-win Figure B-16 Tunnel Setting TabFigure B-19 IP Filter List Tab Figure B-22 Preshared Key Figure B-25 Connection Type Assign New IPSec PolicyFigure B-28 VPN Tab Create a Tunnel Through the Web-Based UtilityWindows 98 or Me Instructions Figure C-1 IP Configuration ScreenFigure C-3 MAC Address/Physical Address Windows 2000 or XP InstructionsAppendix D Upgrading Firmware Figure D-1 Upgrade FirmwareShared Resources Appendix E Windows HelpNetwork Neighborhood/My Network Places Appendix F Glossary Adsl Gateway with 4-Port Switch Adsl Gateway with 4-Port Switch Adsl Gateway with 4-Port Switch Standards Appendix G SpecificationsLimited Warranty Appendix H Warranty InformationFCC Statement Appendix I Regulatory InformationEurope Mail Address Appendix J Contact InformationOutside of Europe Mail Address
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