this post was submitted on 20 Oct 2023
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SSH suddenly not working? (alien.top)
submitted 11 months ago by [email protected] to c/[email protected]
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I have two machines, one is Windows 11 and my server is running Debian 12. SSH has run fine on both machines up until recently. Whenever i try to SSH into my server, it will reject the password (which is undoubtedly correct), and after a few failed attempts it will give me an error that says "Permission denied (publickey,password)." I can SSH into the server completely fine on my other devices, so the problem has to lie within my Windows machine. Since I last used SSH, the only notable things that have happened were that I installed (and soon after uninstalled) the OpenSSH server for Windows, and yesterday an internet outage happened that left me without internet for a full day. This morning, the router was reset and I've ensured that both machines are connected.

If this is the wrong sub to be posting this on, I'd appreciate if someone were to kindly point me to a correct sub on which I could repost.

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[–] [email protected] 1 points 11 months ago (1 children)

What software are you using to SSH from Windows?

[–] [email protected] 1 points 11 months ago (1 children)

I'm using default terminal, but I've tried connecting from putty as well and it didn't work.

[–] [email protected] 1 points 11 months ago (1 children)

You got Fail2Ban installed on your Linux host? Has it possibly banned your Windows IP?

[–] [email protected] 1 points 11 months ago

I've installed Fail2Ban before on this machine, but I've since uninstalled it. I've also checked sudo-iptables, and it doesn't show any rejected IPs.