annoying brute force attack attempt using ssh

Wolfgang S. Rupprecht wolfgang.rupprecht+gnus200805 at gmail.com
Thu May 15 21:41:00 UTC 2008


"jeff emminger" <jemminger at gmail.com> writes:
> isn't password authentication insecure?  why not set
> "PasswordAuthentication no" and use ssh keys, and maybe port-knocking
> too

My feeling exactly.  You have no control over how stupid a password
users will pick.  The only control you have is to not allow passwords
in the first place and insist on at least a 1k-bit (hopefully random)
key.

The "recent" iptables module takes care of the cpu loading and much of
the network loading caused by the ssh guessing attacks.

-wolfgang
-- 
Wolfgang S. Rupprecht                http://www.wsrcc.com/wolfgang/





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