Translations:Home router/87/en

Sometimes users need to be able to host services on a computer behind the router, or need to be able to connect remotely to a computer behind the router. Perhaps a FTP, HTTP, SSH, or VNC server is needed on one or more machines behind the router and outsiders need to connect to them all. The only caveat to Port Forwarding is only one service/machine combo can be established per port. For example, there is no practical way to setup three FTP servers behind the router and connect to them all through port 21; only one system can be on port 21 while the others would need to be on other ports (port 123 and port 567 would be fine options).