Linksys AG041 (EU) manual Tcp Udp

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ADSL Gateway with 4-Port Switch

6.I need to set up a server behind my Gateway and make it available to the public.

To use a server like a web, ftp, or mail server, you need to know the respective port numbers they are using. For example, port 80 (HTTP) is used for web; port 21 (FTP) is used for FTP, and port 25 (SMTP outgoing) and port 110 (POP3 incoming) are used for the mail server. You can get more information by viewing the documentation provided with the server you installed.

Follow these steps to set up port forwarding through the Gateway’s web-based utility. We will be setting up web, ftp, and mail servers.

1.Access the Gateway’s web-based utility by going to http://192.168.1.1 or the IP address of the Gateway. Go to the Applications and Gaming => Port Range Forwarding tab.

2.Enter any name you want to use for the Customized Application.

3.Enter the External Port range of the service you are using. For example, if you have a web server, you would enter the range 80 to 80.

4.Check the protocol you will be using, TCP and/or UDP.

5.Enter the IP address of the computer or network device that you want the port server to go to. For example, if the web server’s Ethernet Adapter IP address is 192.168.1.100, you would enter 100 in the field provided. Check “Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address.

6.Check the Enable option for the port services you want to use. Consider the example below:

Customized Application

External Port

TCP

UDP

IP Address

Enable

Web server

80 to 80

X

 

192.168.1.100

X

FTP server

21 to 21

X

 

192.168.1.101

X

SMTP (outgoing)

25 to 25

X

 

192.168.1.102

X

POP3 (incoming)

110 to 110

X

 

192.168.1.102

X

When you have completed the configuration, click the Save Settings button.

7.I need to set up online game hosting or use other Internet applications.

If you want to play online games or use Internet applications, most will work without doing any port forwarding or DMZ hosting. There may be cases when you want to host an online game or Internet application. This would require you to set up the Gateway to deliver incoming packets or data to a specific computer. This also applies to the Internet applications you are using. The best way to get the information on what port services to use is to go to the website of the online game or application you want to use. Follow these steps to set up online game hosting or use a certain Internet application:

1.Access the Gateway’s web interface by going to http://192.168.1.1 or the IP address of the Gateway. Go to the Applications and Gaming => Port Range Forwarding tab.

2.Enter any name you want to use for the Customized Application.

3.Enter the External Port range of the service you are using. For example, if you want to host Unreal Tournament (UT), you would enter the range 7777 to 27900.

4.Check the protocol you will be using, TCP and/or UDP.

Appendix A: Troubleshooting

43

Common Problems and Solutions

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Contents Adsl Gateway Word definition How to Use this GuideCopyright and Trademarks Table of Contents Adsl Gateway with 4-Port Switch List of Figures A Network with the Gateway23 Applications & Gaming Port Triggering Figure B-23 New Preshared Key Introduction WelcomeWhat’s in this Guide? Adsl Gateway with 4-Port Switch IP Addresses Planning your NetworkGateway’s Functions What’s an IP Address?Dynamic IP Addresses What is a VPN?Dhcp Dynamic Host Configuration Protocol Servers Encryption encoding data transmitted in a networkWhy do I need a VPN? VPN Gateway to VPN GatewayVPN Gateway-to-VPN Gateway Getting to Know the Adsl Gateway Back PanelFront Panel DSLISP a company that provides access to the Internet Connecting the Adsl GatewayConnecting to a Computer OverviewConnect power Access Restrictions Configuring the Adsl GatewaySetup SecurityApplications & Gaming How to Access the Web-based UtilityAdministration StatusInternet Setup Setup TabBasic Setup RFC 1483 Bridged Dynamic IP Static IPRFC 1483 Routed RFC 2516 PPPoEBridged Mode Only RFC 2364 PPPoAOptional Settings Required by some ISPs Network SetupDdns DynDNS.orgStatic Routing Advanced RoutingAdvanced Routing 12 Routing Table Security Tab FirewallVPN Software instructions for the computer15 VPN with Manual Key Management Advanced VPN Tunnel Setup PhaseConfiguring the Adsl Gateway Security Tab Access Restrictions Tab Internet Access19 List of PCs Applications and Gaming Tab Single Port ForwardingPort Range Forwarding Port TriggeringDMZ Management Administration TabGateway Access UPnP Email Alerts ReportingLog Smtp the standard e-mail protocol on the InternetPing Test Ping Test Parameters DiagnosticsFactory Defaults Firmware Upgrade 29 Administration tab Firmware UpgradeGateway Information Status TabGateway Internet ConnectionsLocal Network DSL ConnectionNeed to set a static IP address on a computer Appendix a TroubleshootingCommon Problems and Solutions Want to test my Internet connection Open a command prompt. For Windows 98 and Me Adsl Gateway with 4-Port Switch TCP UDP VPN Ipsec Can’t get the Internet game, server, or application to workFirmware upgrade failed, and/or the Power LED is flashing To start over, I need to set the Gateway to factory defaultNeed to upgrade the firmware My DSL service’s PPPoE is always disconnecting Where is the Gateway installed on the network? Frequently Asked QuestionsPower LED flashes continuously Is IPSec Passthrough supported by the Gateway?What is Network Address Translation and what is it used for? Does the Gateway support ICQ send file?What is DMZ Hosting? How do I reset the Gateway? What are the advanced features of the Gateway?What is a MAC Address? Is the Gateway cross-platform compatible?Introduction EnvironmentBuild Filter Lists How to Establish a Secure IPSec TunnelCreate an IPSec Policy Filter List 1 win-RouterFilter List 2 Router -win Figure B-4 IP Filter LIstFigure B-7 IP Filter List Configure Individual Tunnel Rules Tunnel 1 win-RouterFigure B-13 Authentication Methods Figure B-16 Tunnel Setting Tab Tunnel 2 Router-winFigure B-19 IP Filter List Tab Figure B-22 Preshared Key Assign New IPSec Policy Figure B-25 Connection TypeCreate a Tunnel Through the Web-Based Utility Figure B-28 VPN TabFigure C-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions Figure C-3 MAC Address/Physical AddressFigure D-1 Upgrade Firmware Appendix D Upgrading FirmwareNetwork Neighborhood/My Network Places Appendix E Windows HelpShared Resources Appendix F Glossary Adsl Gateway with 4-Port Switch Adsl Gateway with 4-Port Switch Adsl Gateway with 4-Port Switch Appendix G Specifications StandardsAppendix H Warranty Information Limited WarrantyAppendix I Regulatory Information FCC StatementOutside of Europe Mail Address Appendix J Contact InformationEurope Mail Address