Reference Manual for the Wireless Cable Modem Gateway CG814WG v2
Protecting Your Network
5-7
To configure outbound rules on the CG814WG v2, click the Port Blocking link on the Advanced
section of the main menu.
Figure 5-5: Port Blocking menu
•
To block outbound traffic, select the service you would like to block from the drop-down list
of predefined services. Click Add.
•
If the service you would like to block is not in the predefined list, you can add a custom
service. Enter the range of ports you would like to block and select whether the ports are TCP,
UDP or Both. Click Add.
•
To delete an existing rule, select its button on the left side of the table and click Delete.
Port Forwarding
Because the CG814WG v2 uses Network Address Translation (NAT), your network presents only
one IP address to the Internet, and outside users cannot directly address any of your local
computers. However, by defining an inbound rule you can make a local server (for example, a Web
server or game server) visible and available to the Internet. The rule tells the gateway to direct
inbound traffic for a particular service to one local server based on the destination port number.
This is also known as Port Forwarding.
