Filter
Top Products
Wireless Cable Modem Gateway CGD24G User Manual
3-8 Content Filtering and Firewall Rules
v1.1, May 2009
To configure port blocking and services to block specific outbound traffic:
1. In the main menu, under Advanced, select Port Blocking. The Port Blocking screen displays.
2. Under Add 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 Service 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.
• Protocol. Select the protocol for the ports:
– TCP. Select TCP only.
– UDP. Select UDP only.
– Both. Select both TCP and UDP.
Figure 3-5