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Same question as this Preventing brute force attacks against ssh? - specifically for Windows Server. Strong passwords, RSA auth, and port knocking all apply to windows - but I'm hoping for something to block repeatedly failing IP addresses.

I'm not attached to any particular SSH server, would be nice if there was a server with something built in. Googling reveals a lot of brute force clients for Windows, but nothing for servers getting attacked.

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DenyHosts is a python script; it may be able to be made to work on Windows.

Failing that, this guy apparently wrote a knockoff of it in Visual Basic(!!).

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Check here: That does not have lots of capacity like fail2ban does, but I think it is something you were looking for.

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