What is reverse SSH tunneling and how does it work?

What is reverse SSH?

SSH is a secure connection between a client and server over which commands can be executed on the server. As long as the two devices can see each other on the internet the SSH connection can also be made from the server to the client. This is however often blocked by firewalls and NATs.

What is reverse tunneling?

Reverse tunneling is a tunneling from mobile host to home agent, and makes it possible for the mobile host from foreign network to communication in the network whose router has access filters.

What is reverse SSH port forwarding?

Reverse SSH Port Forwarding specifies that the given port on the remote server host is to be forwarded to the given host and port on the local side. To try to put this as simple as can be, Reverse SSH is a technique through which you can access systems that are behind a firewall from the outside world.

Is SSH tunneling bidirectional?

With Two-Way SSH tunnel you can connect to any destination under a single condition, which is, the ability to ssh login from the destination to the source. If you can do that, you can as well reverse login from source to destination even if it is behind firewall or NAT.