108 Mbps Wireless Router WGT624 v4 Reference Manual
The WAN setup options are explained below:
•Disable SPI Firewall.
Normally, this option should be enabled, so that your local network will be protected by the stateful packet inspection (SPI) firewall included in the wireless router. However, certain communications functions like VPN may require turning off the SPI feature.
Note: When SPI firewall is disabled, you must use the Passive mode in the computer FTP client to connect to the FTP server.
•Default DMZ Server.
The default DMZ server feature is helpful when you use some online games and videoconferencing applications that are incompatible with NAT. The router 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 computer can run the application properly if that computer’s IP address is entered as the default DMZ server.
Note: DMZ servers pose a security risk. A computer designated as the default DMZ 
server loses much of the protection of the firewall, and is exposed to exploits from the Internet. If compromised, the DMZ server can be used to attack your
network.
Incoming traffic from the Internet is normally discarded by the router unless the traffic is a response to one of your local computers or a service that you have configured in the Ports 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.
•NAT Filtering.
This determines how your router handles inbound traffic. The Secured option provides a secure firewall to protect the computers on the LAN from attacks from the Internet, but it may cause some Internet games,
•Assigning a Default DMZ Server. See “Assigning a Default DMZ Server” on page
Advanced Configuration |
