[101842] in North American Network Operators' Group
Re: Level3/GTEI well-known DNS down?
daemon@ATHENA.MIT.EDU (Joe Provo)
Sat Jan 19 10:42:18 2008
Date: Sat, 19 Jan 2008 10:33:14 -0500
From: Joe Provo <nanog-post@rsuc.gweep.net>
To: nanog@nanog.org
Reply-To: nanog-post@rsuc.gweep.net
In-Reply-To: <daf895880801190136i24a079b4u83b0ef227b4cd840@mail.gmail.com>
Errors-To: owner-nanog@merit.edu
On Sat, Jan 19, 2008 at 02:36:14AM -0700, randal k wrote:
> Anybody know what is up/down with the GTE/Level3 name-servers used the world
> over on 4.2.2.1, 4.2.2.2? Suddenly started getting no responses from them
> for a couple of our side apps.
Testing from an l3 customer network which got responses and a non-l3
customer network which did not implies that they finally clamped down
on non-customer use of their anycasted resolvers.
> I hope these servers stick around forever, they're kind of an Internet
> legend.
Open resolvers are seriously abused by botnets and related baddies.
Perhaps you might need to run a set of resolvers, or get your service
provider[s] to give you something similar to well-tuned anycasted
resolvers.
Cheers,
Joe
--
RSUC / GweepNet / Spunk / FnB / Usenix / SAGE
