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Wireless Cable Modem Gateway CGD24G User Manual
3-6 Content Filtering and Firewall Rules
v1.1, May 2009
game server) or computer visible and available to the Internet. The rule tells the gateway to direct
inbound traffic for a particular service to one local server or computer based on the destination port
number. This is also known as port forwarding.
To configure port forwarding and services for specific inbound traffic:
1. In the main menu, under Advanced, select Port Forwarding. The Port Forwarding screen
displays.
2. Under Choose Predefined Service, select a predefined service from the Service field. (For
example, FTP, which uses TCP ports 20 and 21.)
3. As an option, you can also specify a custom rule that is not in the list of predefined services by
specifying the following settings in the Add Custom Rules table:
• Name. Enter a name for the service.
• Start Port. Enter the start port for the service.
• End Port.Enter the end port for the service.
Note: Some residential broadband ISP accounts do not allow you to run any server
processes (such as a web or FTP server) from your location. Your ISP may
periodically check for servers and may suspend your account if it discovers
any active services at your location. If you are unsure, refer to the Acceptable
Use Policy of your ISP.
Figure 3-4