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Also, what if ssh is on port 1023, which is still a non standard port, not default but privileged, does this help in any way?

I'm asking because I don't really know but have to set up my own servers from time to time (hobby admin).

Edit: I always use key based auth, don't allow root etc.

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It cleans up your log files, that's why I do it. If you run ssh on port 22 your log files with be full of script kiddies with turnkey exploits spamming every IP address they can find. Change the port and suddenly that the logs get much, much quieter. So it's not really a security technique, it's a convenience technique.

I can't say for sure it would help in any useful way, but it won't reduce your security to run ssh on port 1023.

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