How does SSH tunneling work?

Question

SSH tunneling, or SSH port forwarding, is a method of transporting arbitrary data over an encrypted SSH connection. SSH tunnels allow connections made to a local port (that is, to a port on your own desktop) to be forwarded to a remote machine via a secure channel.

Why do we need SSH tunneling?

SSH tunneling is a method to transport additional data streams within an existing SSH session. SSH tunneling helps achieve security use cases such as remote web service access without exposing port on the internet, accessing server behind NAT, exposing local port to the internet.

How do I tunnel using SSH?

Access the server using an SSH tunnel1In the “Connection -> SSH -> Tunnels” section, create a secure tunnel by forwarding a port (the “destination port”) on the remote server to a port (the “source port”) on the local host (127.0. ... 2Click the “Add” button to add the secure tunnel configuration to the session.

Is SSH tunneling the same as port forwarding?

SSH port forwarding is often referred to as SSH tunneling, and the two terms are used interchangeably. The encrypted SSH 'tunnel' serves as a vessel to transfer assorted data and deliver it safely to the remote system. This method is regularly used to circumvent standard firewall security protocols.

How does SSH reverse tunnel work?

Reverse SSH solves this issue by simulating an SSH to the remote server. In this case, the remote machine listens on the local computer's network port. It relays SSH connection requests to that port back to itself, which establishes a new connection between the local and remote computers.

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