title: Ssh from one local network to another through inermediary with public IP
body: <p>There is one computer (A) in one local network and the other (B) in the other one. None of them have public ip addresses. Both LAN gateways are out of my control. But I have a VPS server with public IP address and both A and B are able to connect to this VPS. How can I establish an ssh tunnel from A to B using intermediary VPS? </p>