[74748] in North American Network Operators' Group

home help back first fref pref prev next nref lref last post

Re: Excessive DNS Requests

daemon@ATHENA.MIT.EDU (David A. Ulevitch)
Wed Oct 13 15:08:50 2004

In-Reply-To: 
     <7F332A8009EE5D4CB62C87717A3498A10908D447@exchange-be1.lancs.ac.uk>
Date: Wed, 13 Oct 2004 12:08:13 -0700 (PDT)
From: "David A. Ulevitch" <davidu@everydns.net>
To: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu



<quote who="Anderson, Ian">
> Anyone else seeing excessive DNS requests hammering their local
> forwarders this evening.  We've just taken our residence network
> off-line owing to the level of port 53 traffic coming from it.  Can't
> see anything in the usual places regarding this....

Things seem normal over here...

http://fiona.everybox.com/~davidu/dns1-101304-120500pdt.png
(authoritative ns)

Are the residents actually making legit DNS queries or just spewing down
port 53?

-davidu



----------------------------------------------------
   David A. Ulevitch - Founder, EveryDNS.Net
   http://david.ulevitch.com -- http://everydns.net
----------------------------------------------------


home help back first fref pref prev next nref lref last post