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Date:      Tue, 18 Sep 2001 19:52:18 +0200
From:      "Karsten W. Rohrbach" <karsten@rohrbach.de>
To:        freebsd-security@freebsd.org
Subject:   Nimda-A Worm/Virus threatens networks
Message-ID:  <20010918195218.P27375@mail.webmonster.de>

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there's a new breed out there again, check the analysis of it here:
[http://www.symantec.com/avcenter/venc/data/w32.nimda.a@mm.html]

i am writing this to -security to inform you to be able to react
quickly, because -- depending on your upstream bandwidth -- this new
worm may clog your upstream pipe. it started hammering on my servers at
approx. 18:30 CEST (+0200) and until now (19:50 CEST) i got hit by it
several thousand times. the generated bandwisth does not harm me, but if
you are hooked up via T1 or DSL it might consume all of your available
bandwidth. if it does not cease soon (what i do not expect) it will have
transferred about 3 to 4 gigabytes just http request headers in one day
on one machine (rough estimate by wallclocktime and calculator).

apache installations, of course, are not harmed, but as i said it
generates helluva traffic.

take care
/k

--=20
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