Mark Baker on 24 Jul 2007 19:10:21 -0000


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RE: [PLUG] ssh brute force attacks & real time offending IP lists


> however, keep in mind that this (and even my suggestion to a lesser
> degree)
> opens up some potential security/DDOS issues.  for example, if you 
base
> your
> access control list on data someone else is providing, it's possible 
that
> either directly (feeding fake data) or indirectly (connection 
spoofing) a
> mean person could put your own network blocks into said list, causing 
some
> grief :)

Sean,

You're absolutely correct. There is a risk if you do not trust the 
person providing the information, although I am sure most of us trust 
the anti-spam lists provided with our spam assassin installs etc.

I do think a list of brute-force offenders such as the one spamhaus 
compiles would be very useful and one we could all benefit from.  In 
fact I am surprised a list like this hasnt been created.  Does anyone 
have am idea why this is?  I am sure we arent the fist ones to have 
this discussion.

Mark

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