You might start with blacklists.  There's a lot of them out there.
http://ahbl.org is one of them.


Geoff White <geoffw@cybertribe.com>
Sent by: owner-nanog@merit.edu

07/06/2005 02:49 PM

To
nanog@merit.edu
cc
Subject
Need BOGIES list






Hello All.
I'm having trouble with Cracking Attempts  and DoS attacks from a lot of
places in China :)
My client doesn't do any business in that region so they don't mind If I
block the entire sub-continent :)
Does anyone have a bad-guy list (or part of one) that I can use to get
started?
I'm using pf under OpenBSD 3.7 as a firewall box.
E-mailing me off line is fine


geoffw