[22026] in North American Network Operators' Group
Re: identify hostname
daemon@ATHENA.MIT.EDU (Brandon Ross)
Thu Dec 3 00:48:07 1998
Date: Thu, 3 Dec 1998 00:15:58 -0500 (EST)
From: Brandon Ross <bross@mindspring.net>
To: nanog@merit.edu
In-Reply-To: <199812021453.IAA05066@whistler.intur.net>
On Wed, 2 Dec 1998, Phil Howard wrote:
> AFAIK, today, smurfers are only using *.*.*.255. They would have to
> track a lot more information to use others, so for now I can generally
> expect that deny to prevent us from being an amplifier.
I'm afraid that in my experience, that's not true at all. I've seen smurf
attacks bounced off of networks as small as /30's and all the way up to
one network that was a /22, as well as everything inbetween, and I'm not
just talking about the last /30 in a /24 either.
Brandon Ross Network Engineering 404-815-0770 800-719-4664
Director, Network Engineering, MindSpring Ent., Inc. info@mindspring.com
ICQ: 2269442
Stop Smurf attacks! Configure your router interfaces to block directed
broadcasts. See http://www.quadrunner.com/~chuegen/smurf.cgi for details.
