linux-kernel - Re: kernel.org status: hints on how to check your machine for intrusion

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Message-ID: <1317494408.4588.76.camel@gandalf.stny.rr.com>
Date:	Sat, 01 Oct 2011 14:40:07 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	David Miller <davem@...emloft.net>
Cc:	w@....eu, greg@...ah.com, linux-kernel@...r.kernel.org
Subject: Re: kernel.org status: hints on how to check your machine for
 intrusion

OK, I decided to attach the perl script anyway. It is very crude, and
really needs to be cleaned up for generic use.

I copy this file into /etc/cron.daily/01iptable-update and let the cron
daemon run it. I get nice little reports from cron when something is
added, like:

/etc/cron.daily/01iptables-update:
adding 8.25.218.88 to iptables blocked list
adding 116.125.124.20 to iptables blocked list
adding 38.99.131.171 to iptables blocked list

I officially announce that this file is being released under the GPLv2
license. If you want to fix it up. Feel free, but please send me a
copy ;)

Note, this was written for a Debian system. It reads
the /var/log/auth.log file. Your system may require a different read,
and maybe even different regex parsing.

-- Steve

Download attachment "iptables-examine-logs.pl" of type "application/x-perl" (3032 bytes)