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Right, I had to use `nc` instead of forwarding the port from SSH itself because I use systemd socket activation for that ssh command, with

    ExecStart=ssh -T server 'nc 127.0.0.1 5900'
    StandardInput=socket
    StandardOutput=socket
in the service file and

    ListenStream=0.0.0.0:5900
in the socket file.

The socket has to be connected to stdin/stdout instead of using SSH forwarding since SSH doesn't support fd-based socket activation.



Yea that's definitely a bit more of an edge case. and for the downvoted sibling commentor, this is the same kind of setup that previously would be done with inetd or xinetd and the lack of security or monitoring or logging that that usually entails. I'd be surprised if there's not some other way to do it but this seems like a perfectly fine work around otherwise.


Why must systemd break everything?

It is like a vandal with a baseball bat.




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