Linksys BEFSX41 manual UPnP Forwarding

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Figure 7-38

Instant Broadband® Series

If you need to forward all ports to one PC, see the “DMZ Host” section.

To add a server using Forwarding:

1.Enter the name of the application in the appropriate Customized Applications field.

2.Next to the name of the application, enter the number or range of the exter- nal port(s) used by the server or Internet application in the Ext. Port col- umn. Check with the Internet application software documentation for more information.

3.On the same line, select the protocol UDP or TCP, or select both protocols.

4.Enter the IP address of the server that you want the Internet users to be able to access. To find the IP address, go to “Appendix G: Finding the MAC Address and IP Address for Your Ethernet Adapter.”

5.Check the Enable box to enable the services you have defined. Port Range Forwarding will not function if the Enable button is left unchecked. This is disabled (unchecked) by default.

6.Configure as many entries as needed—the Router supports up to ten ranges of ports. Click the Apply button and Continue button when you are done.

UPnP Forwarding

The UPnP Forwarding screen, shown in Figure 7-38, displays preset applica- tion settings as well as options for customization of port services for other applications.

The Preset Applications are among the most widely used Internet applications. They include the following:

•FTP (File Transfer Protocol) A protocol used to transfer files over a TCP/IP network (Internet, UNIX, etc.). For example, after developing the HTML pages for a website on a local machine, they are typically uploaded to the web server using FTP. FTP includes functions to log onto the net- work, list directories, and copy files. FTP operations can be performed by typing commands at a command prompt or via an FTP utility running under a graphical interface such as Windows. FTP transfers can also be initiated from within a web browser by entering the URL preceded by ftp://.

EtherFast® Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint

•Telnet A terminal emulation protocol commonly used on

Internet and TCP/IP-based net- works. It allows a user at a terminal or computer to log onto a remote device and run a program.

•S M T P ( S i m p l e

Mail Transfer Protocol) The stan- dard e-mail proto- col on the Internet. It is a TCP/IP pro- tocol that defines

the message format

and the message transfer agent (MTA), which stores and forwards the mail.

•DNS (Domain Name System) The way that Internet domain names are located and translated into IP addresses. A domain name is a meaningful and easy-to-remember “handle” for an Internet address.

•TFTP (Trivial File Transfer Protocol) A version of the TCP/IP FTP proto- col that has no directory or password capability.

•Finger A UNIX command widely used on the Internet to find out infor- mation about a particular user, such as a telephone number, whether the user is currently logged on, and the last time the user was logged on. The person being “fingered” must have placed his or her profile on the system in order for the information to be available. Fingering requires entering the full user@domain address.

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Contents User Guide Copyright & Trademarks Table of Contents Introduction FeaturesEnvironmental 139 IP Addresses An Introduction to LANs and WANsWhy Do I Need a VPN? Network Setup OverviewYour Virtual Private Network VPN Firewall Router to Firewall Router What is a Virtual Private Network?Router’s Back Panel PowerModem connection will not work from any other port PortsRouter’s Front Panel LEDs WAN and LAN LEDsProceed to Connect the Router Router’s hardware installation is now complete Connecting Your Hardware Together and Booting UpConnect the Router OverviewConfiguring Windows 95, 98, and Millennium PCs Configure the PCsConfiguring Windows 2000 PCs Go to Configure the RouterConfiguring Windows XP PCs Configure the Router Static IP Address Obtain an IP Address AutomaticallyAdvanced Proxies. Click Direct Connection to the Internet Enter the Gateway AddressRAS PPPoECable/DSL Firewall Router’s Web-based Utility Quick and Easy Router AdministrationSetup Static IP User Name and PasswordWAN IP Firewall Block WAN Request Remote UpgradeMulticast Pass Through IPSec Pass ThroughVPN Establishing a TunnelLocal Secure Group and Remote Secure Group Remote Security Gateway Encryption AuthenticationKey Management Instant Broadband Series Phase Advanced Settings for Selected IPSec TunnelPassword Other SettingsStatus Dhcp Log Help Filters AdvancedInstant Broadband Series Forwarding UPnP Forwarding Port Triggering Static Routing Dynamic RoutingDMZ Port DMZ HostDMZ Host Address MAC Address Clone Current DMZ HostDdns DynDNS.orgCommon Problems and Solutions Appendix a TroubleshootingTZO.com For Windows XP For Windows NTFor Windows 95, 98, and Me For Windows XP Am not able to access the Router’s web interface Setup Can’t get the Internet game, server, or application to work To start over, I need to set the Router to factory default Need to use port triggering Click the Advanced = Filter tabFrequently Asked Questions TCP/IP is compatible with the Router Appendix B Maximizing VPN Security Environment IntroductionWindows 2000 or Windows XP Step One Create an IPSec PolicyStep Two Build Filter Lists Filter List 1 win-routerIP Address Figure C-6 Filter List 2 router=winTunnel 1 win-router Step Three Configure Individual Tunnel RulesString to Protect Negotiate Security Key exchange pre Respond Using IPSec XYZ12345. ClickShared key, as shown AcceptTunnel 2 router-win Key Exchange Action Require Security This string to protectPreshared key, XYZ12345Step Four Assign New IPSec Policy Figure C-24Figure C-28 Step Five Create a Tunnel Through the Web-based UtilityAppendix D Snmp Functions Appendix E How to Ping Your ISP’s E-mail & Web AddressesFigure E-1 TCP/IP installation is now complete Appendix F Installing the TCP/IP ProtocolFor Windows NT, 2000, and XP Figure G-1Figure G-5 Appendix H Glossary 129 131 133 135 137 Environmental Appendix I SpecificationsAppendix K Contact Information Appendix J Warranty InformationSales Information Web FTP SiteCopyright 2003 Linksys, All Rights Reserved
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