Reference Manual for the Model DG814 DSL Modem Internet Gateway
Security
DMZ Server
Incoming traffic from the Internet is normally discarded by the gateway unless the traffic is a response to one of your local computers or a service that you have configured in the Port Forwarding menu. Instead of discarding this traffic, you can have it forwarded to one computer on your network. This computer is called the Default DMZ Server.
The Default DMZ Server feature is helpful when using some online games and videoconferencing applications that are incompatible with NAT. The gateway is programmed to recognize some of these applications and to work properly with them, but there are other applications that may not function well. In some cases, one local PC can run the application properly if that PC’s IP address is entered as the Default DMZ Server.
The Security menu, shown in Figure
Figure | Security menu. |
Note: For security, you should avoid using the Default DMZ Server feature. When a computer is designated as the Default DMZ Server, it loses much of the protection of the gateway, and is exposed to many exploits from the Internet. If compromised, the computer can be used to attack your network.
To assign a computer or server to be a Default DMZ server:
1.Click Default DMZ Server.
2.Type the IP address for that server.
3.Click Apply.
Advanced Configuration of the Gateway |