North American Network Operators Group
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Re: identify hostname

  • From: Brandon Ross
  • Date: Thu Dec 03 00:47:52 1998 
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.  [email protected]
                                                            ICQ:  2269442

Stop Smurf attacks!  Configure your router interfaces to block directed
broadcasts. See http://www.quadrunner.com/~chuegen/smurf.cgi for details.