Block IP

Graham Menhennitt gmenhennitt at
Thu Dec 21 20:44:46 PST 2006

Christopher Hilton wrote:
> If it's at all possible switch to using public keys for authentication
> with ssh and disallow password authentication. This completely stops
> the brute forcing attacks from filling up your periodic security mail.
Are you sure about that? I only allow PublickeyAuthentication ssh2
connections but I get lots of security mail messages like:

Nov 16 01:44:08 maxwell sshd[70067]: Invalid user marcos from
Nov 16 01:44:23 maxwell sshd[70067]: reverse mapping checking getaddrinfo for failed - POSSIBLE BREAKIN ATTEMPT!


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