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Re: Malicious DNS request?
- From: Brad Knowles
- Date: Thu May 12 11:15:34 2005
At 12:41 PM +0400 2005-05-12, Gadi Evron quoted Joe Shen:
How could such request be filtered or minimize its
affaction on DNS server?
Either this is a DDoS (woohoo!! I used the forbidden word) or you are
seeing a botnet trying to connect and putting in some smoke-screen while
at it to try and poison dns-top.
I'd suggest dropping requests for domains you don't hold.
That's kind of hard to do if you're running a recursive/caching nameserver.
--
Brad Knowles, <brad@stop.mail-abuse.org>
"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."
-- Benjamin Franklin (1706-1790), reply of the Pennsylvania
Assembly to the Governor, November 11, 1755
SAGE member since 1995. See <http://www.sage.org/> for more info.
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