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SSH port forwarding is one amazing aspect of this software. For one example, you can develop on a remote system by forwarding your local port 3000 to the remote 3000, using something like `ssh -nFL 3000:localhost:3000 user@remote`, all while going through SSH! It's an indispensable tool for modern development.

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Ahh, good times. SSH tunnels and FoxyProxy to run X11 applications on remote servers.

You can also simply use `ssh -X`/`ssh -Y` and use your local X/Xwayland server for the remote app. This way you can start remote GUI apps like local ones from your shell.

How is the latency on that?

Surprisingly good.

I was running emacs on a machine in the cloud on the east coast, tunneling to my X server on my laptop on the west coast. No visible keystroke latency. Only noticeable latencies were copy/paste and initial startup but those were only bad enough to be noticeable, not bad enough to annoy me.

Fine if you're on the LAN, but for WAN connections you generally want xpra or NX.

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