Connection Multiplexing

Question

Supposing we have opened a connection of type either TCP or UDP to another remote machine. Having this connection, can we allow multiple connections virtually over this connection like VPN(but not VPN)? I mean multiple applications run on remote machine and you try to access to these applications, is there any multiplexing mechanism or concept supporting such feature?

Answer 1

That is also known as tunneling protocol, and various applications implement that for various protocols. I personally like OpenSSH - see here.