this post was submitted on 10 Sep 2023
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To mitigate the effort to maintain my personal server, I am considering to only expose ssh port to the outside and use its socks proxy to reach other services. is Portknocking enough to reduce surface of attack to the minimum?

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[–] [email protected] 1 points 1 year ago (8 children)

Sounds like security through obscurity to me.

Highly susceptible to replay and man in the middle attacks.

If you're gonna combine that with another authentication method (and you should), then I see little advantage over just going with the other auth method.

[–] [email protected] 3 points 1 year ago (6 children)

Sure? It certainly detracts bots that now don't discover the SSH port anymore. Against a targeted attack it's less useful, but that is a very hard problem in any case. If someone is out to get you specifically, it will be a tough battle.

[–] [email protected] 1 points 1 year ago

If you're worried about bots just use a non-standard port and move on. I did that on my own VPS just to cut down on log chatter and I get absolutely zero ssh attack attempts after the change.

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