Linksys WRVS4400N Manual page 76

Port Range Forwarding
This is one of the NAPT (Network Address Port Translation) features. The Port Range
Forwarding screen allows you to set up public services on your network, such as web
servers, ftp servers, e-mail servers, or other specialized Internet applications that use one
or multiple port numbers (e.g. video conference). The port numbers being used will not
change while forwarding to the local network. This allows users on the Internet to access
this server by using the WAN port IP address and the pre-defined port numbers. When
users send these types of requests to your WAN port IP address via the Internet, the NAT
Router will forward those requests to the appropriate servers on your LAN.
Application. Enter the name of the application you wish to configure.
Start. This is the beginning of the port range. Enter the beginning of the range of port
numbers (external ports)
used by the server or Internet application. Check with the software documentation of the
Internet application for more information if necessary.
End. This is the end of the port range. Enter the end of the range of port numbers
(external ports) used by the server or Internet application. Check with the software
documentation of the Internet application for more information if necessary.
Protocol. Select the protocol(s) used for this application, TCP and/or UDP.
IP Address. For each application, enter the IP address of the PC running the specific
application.
Enabled. Select Enabled to enable port range forwarding for the relevant application.
Change these settings as described here and click Save Settings to apply your changes, or
click Cancel Changes to cancel your changes. Help information is displayed on the
right-hand side of the screen, and click More for additional details.