Part 3: SSH Tunnels Deep Dive - SSH Through Bastion Server [with labs]

In the last two parts , Local Port Forwarding and Remote Port Forwarding , we covered the two main directions of SSH port forwarding: local and remote. Those are the ones most people struggle with at first, but once you understand them, everything else falls into place. The next type of SSH tunnel builds on what you already learned about local forwarding, but adds an intermediate step.

Instead of forwarding traffic directly to the SSH server, we forward it through a machine that sits between you and the actual target. This intermediate machine is commonly known as a bastion host.

Learn more in this guide: