Wireless Cable Modem Gateway CGD24G User Manual
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.
Figure 3-5
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.
3-8
Content Filtering and Firewall Rules
v1.1, May 2009