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A Visual Guide to SSH Tunnels: Local and Remote Port Forwarding

iximiuz.com A Visual Guide to SSH Tunnels: Local and Remote Port Forwarding

SSH port forwarding explained in a clean and visual way. How to use local and remote port forwarding. What sshd settings may need to be adjusted. How to memorize the right flags.

A Visual Guide to SSH Tunnels: Local and Remote Port Forwarding

SSH is yet another example of an ancient technology that is still in wide use today. It may very well be that learning a couple of SSH tricks is more profitable in the long run than mastering a dozen Cloud Native tools destined to become deprecated next quarter.

One of my favorite parts of this technology is SSH Tunnels. With nothing but standard tools and often using just a single command, you can achieve the following:

  • Access internal VPC endpoints through a public-facing EC2 instance.
  • Open a port from the localhost of a development VM in the host's browser.
  • Expose any local server from a home/private network to the outside world.

And more 😍

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