[103268] in North American Network Operators' Group

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Re: Mitigating HTTP DDoS attacks?

daemon@ATHENA.MIT.EDU (Mike Lewinski)
Mon Mar 24 20:07:48 2008

Date: Mon, 24 Mar 2008 18:01:42 -0600
From: Mike Lewinski <mike@rockynet.com>
To: nanog@merit.edu
In-Reply-To: <g3ve3bhf19.fsf@sa.vix.com>
Errors-To: owner-nanog@merit.edu


Paul Vixie wrote:

> i only use or recommend operating systems that have their own host based
> firewalls.  soon that will mean pf (from openbsd but available on freebsd)

pf's tables are nifty too btw :)

pfsense, which is FreeBSD + pf, also has a port of snort IDS available. 
Provided the OP has a signature of the attack he can match on, there's a 
wholly open-source solution (I know snort can be configured inline to 
drop packets on a filtering bridge, but of course you've got the 
problems of half-open connections accumulating as well as the potential 
for migration to https).

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