Configure Virtual Server Based on DMZ Host
When NAT is enabled, an Internet request from a client within the private network first goes to the router. Upon receiving a request, the router keeps track of which client is using which port number. Since any reply from Internet goes to the router first, the router (from the port number in the reply packet) knows to which client to forward the reply. If the router does not recognize the port number, it will discard the reply.
When using DMZ on a PC, any reply not recognized by the router will be forwarded to the
You may wish to set up a DMZ host if you intend to use a special- purpose Internet Service such as an online game for which no port range information is available. You can also host Web pages or public information that can be served to the outside world, on the DMZ host.
Page 58