[161720] in North American Network Operators' Group

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Re: Open Resolver Problems

daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Tue Mar 26 07:54:51 2013

Date: Tue, 26 Mar 2013 12:54:40 +0100 (CET)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: nanog@nanog.org
In-Reply-To: <515080A0.8030203@foobar.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On Mon, 25 Mar 2013, Nick Hilliard wrote:

> The best solution is to disable open recursion completely, and police 
> your clients regularly.

Is there an officially sounding document with "open resolver considered 
harmful" or alike?

It's not trivial to deal with a corporate client with an open resolver. 
You can't really shut them off, can't filter them etc. Googling for <open 
resolver considered harmful> yields nothing I can point customers to.

<http://www.ietf.org/rfc/rfc5358.txt> is the closest I can find?

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se


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