full-disclosure - Re: targetted SSH bruteforce attacks

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Message-ID: <4C1A3458.2010109@chem.toronto.edu>
Date: Thu, 17 Jun 2010 10:42:32 -0400
From: Frank Bures <lisfrank@...m.toronto.edu>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: targetted SSH bruteforce attacks

Gary Baribault wrote:
> I just knew that people would say that, and that's why I specified
> that I WANT to keep SSH on 22 .. it's fun to see the attacks, and it's
> interesting to see new types of attacks. The question here is whether
> anyone else is seeing such a targeted attack.

I've seen an interesting SSH attack in the last couple of days on our /22
network.  Instead of probing port 22 on many machines in the shortest
possible time period as usual, this attack seems to be trying to be
stealthy.  It never attacks more than 4 machines in an hour and never twice
from the same IP address.  As all attacking addresses are subsequently
blocked, I wonder how long is it going to take for the guy(s) to run out of
available addresses at this rate :-)

Cheers
Frank

-- 

<feeb@...m.toronto.edu>

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