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Date:      Sat, 18 May 2002 17:05:56 -0700
From:      Lars Eggert <larse@ISI.EDU>
To:        Terry Lambert <tlambert2@mindspring.com>
Cc:        Attila Nagy <bra@fsn.hu>, John Hay <jhay@icomtek.csir.co.za>, freebsd-arch@FreeBSD.ORG, freebsd-net@FreeBSD.ORG
Subject:   Re: HEADS UP: ALTQ integration developer preview
Message-ID:  <3CE6EC64.3060704@isi.edu>
References:  <200205181012.g4IACfe52918@zibbi.icomtek.csir.co.za> <Pine.LNX.4.44.0205181343360.10862-100000@scribble.fsn.hu> <3CE6DA0F.C4D8C289@mindspring.com>
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[-- Attachment #1 --]
Terry Lambert wrote:
> The really cool thing is that this means I can shout on the wire at
> the right time, cause a collision, and effectively stace an undetectable
> denial of service attack against your servers, by making it drop large
> UDP datagrams IP frags.

This "attack" works against any other protocol as well, including TCP. 
If you can create collisions "at the right time", you can disable all 
retransmission schemes. The kicker is - how?

Lars
-- 
Lars Eggert <larse@isi.edu>           USC Information Sciences Institute

[-- Attachment #2 --]
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