[101843] in North American Network Operators' Group
RE: Level3/GTEI well-known DNS down?
daemon@ATHENA.MIT.EDU (Paul Stewart)
Sat Jan 19 10:56:30 2008
Date: Sat, 19 Jan 2008 10:45:27 -0500
In-Reply-To: <20080119153314.GA32833@gweep.net>
From: "Paul Stewart" <pstewart@nexicomgroup.net>
To: <nanog-post@rsuc.gweep.net>, <nanog@nanog.org>
Errors-To: owner-nanog@merit.edu
Not to start a debate but I've used OpenDNS since last year and been
VERY happy with it.... use it in situations where there is no localized
DNS server available....
And yes, to agree - open resolvers are very badly abused .. I'm
surprised it took them this long...
Paul
-----Original Message-----
From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of
Joe Provo
Sent: Saturday, January 19, 2008 10:33 AM
To: nanog@nanog.org
Subject: Re: Level3/GTEI well-known DNS down?
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
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