full-disclosure - Re: Distributed SSH username/password brute forceattack

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Message-ID: <20071022203419.GC18923@lboro.ac.uk>
Date: Mon, 22 Oct 2007 21:34:19 +0100
From: A.L.M.Buxey@...ro.ac.uk
To: Valery Marchuk <tecklord@...uritylab.ru>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Distributed SSH username/password
	brute	forceattack

Hi,

> Oct 22 20:36:13 nms sshd[90657]: Failed password for invalid user gopher 
> from 77.46.152.2 port 55120 ssh2

user/password authentication for SSH?  one way of cleaning up your
logs and killing this type of attack is to reconfigure your OpenSSH
to only allow key based logins. stopped my 10M+ logfiles straight away
(then the apache attacks were easier to see too ;-) )

alan

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