Linksys WRVS4400N User Manual page 71

Setting Up and Configuring the Router
Firewall Tab
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.
External Port—Port number used by the service or Internet application. Internet users must
connect using this port number. Check with the software documentation of the Internet
application for more information.
Internal Port—Port number used by the Router when forwarding Internet traffic to the PC or
server on your LAN and is usually the same as the External Port number. If it is different, the
Router performs a Port Translation, so that the port number used by Internet users is different
from the port number used by the server or Internet application.
For example, you could configure your Web Server to accept connections on both port 80
(standard) and port 8080. Then, enable Port Forwarding, set the External Port to 80 and the
Internal Port to 8080. Now, any traffic from the Internet to your Web server will be using port
8080, even though the Internet users used the standard port, 80. (Users on the local LAN can
and should connect to your Web Server using the standard port 80.)
Protocol—Select the protocol used for this application, TCP and/or UDP.
IP Address—For each application, enter the IP address of the PC running the specific server
application.
Enabled—Select Enabled to enable port forwarding for the relevant server application.
WRVS4400N User Guide 65