A few months ago I one of the servers I was looking after got compromised. Basically some script kiddie with too much CPU power on his (her) hands succeeded in a brute-force attack logging into the ssh server.
Of course now I'm using much longer, harder to crack passwords...
But the other new weapon in my arsenal is a very short script (basically just two lines) - to use this script save it as /etc/init.d/ssh-limit and then run 'update-rc.d -f ssh-limit defaults'. If your external interface is not eth0 then you'll have to adjust the ...
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