Say I have Server 1 and Server 2, both are in charge of running a variety different services (Web-services, file hosting, etc.). Both servers servers are linked together by a D-Link DAP 1522, which serves as a gateway to the rest of the network, controlled by a Linksys WGA600N. I am planning on allowing outside access to these servers as well.
How would you set up the network, so that you can access either server on the same IP, but so that the port number determines which server is accessed, since each service has a different port number?