full-disclosure - Re: targetted SSH bruteforce attacks

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Message-ID: <4C1AAB24.4080203@yahoo.co.uk>
Date: Fri, 18 Jun 2010 01:09:24 +0200
From: Mark Byrne <boogiebruva@...oo.co.uk>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: targetted SSH bruteforce attacks

It's impossible for anyone on this mailing list to know if the attack is
personal or not, unless they are actually involved in the attack. Use a
password such as 7%Ônç#®]â¡@ãnÝèÅ#çñ] and watch them hack away to their
heart's content.

On 17/06/2010 13:48, Gary Baribault wrote:
> Hello list,
> 
>     I have a strange situation and would like information from the
> list members. I have three Linux boxes exposed to the Internet. Two of
> them are on cable modems, and both have two services that are publicly
> available. In both cases, I have SSH and named running and available
> to the public. Before you folks say it, yes I run SSH on TCP/22 and no
> I don't want to move it to another port, and no I don't want to
> restrict it to certain source IPs.
> 
>     Both of these systems are within one /21 and get attacked
> regularly. I run Denyhosts on them, and update the central server once
> an hour with attacking IPs, and obviously also download the public
> hosts.deny list.
> 
>     These machines get hit regularly, so often that I don't really
> care, it's fun to make the script kiddies waste their time! But in
> this instance, only my home box is being attacked... someone is
> burning a lot of cycles and hosts to do a distributed dictionary
> attack on my one box! The named daemon is non recursive, properly
> configured, up to date and not being attacked.
> 
>     Is anyone else seeing this type of attack? Or is someone really
> targeting MY box?
> 
> Thanks
> 
> 
> Gary Baribault
> Courriel: gary@...ibault.net
> GPG Key: 0x685430d1
> Signature: 9E4D 1B7C CB9F 9239 11D9 71C3 6C35 C6B7 6854 30D1
> 
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