Apache HTTP Web Server is listening on one port on the Portal Server for incoming requests—port 80, by default. You can configure Apache HTTP Web Server to use an alternative port. However, all incoming requests—that is, requests from all agents, browsers, etc.—pass through the new port. The best practice is to choose one port for everything, but this isn’t always feasible. If you want to have some agents use one port, and everything else use the default port 80, there is a solution.