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Re: Services and top-level DNS names (was: Re: Update of RFC 2606

Mark Andrews <Mark_Andrews@isc.org> Mon, 07 July 2008 02:25 UTC

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To: John Levine <johnl@iecc.com>
From: Mark Andrews <Mark_Andrews@isc.org>
Subject: Re: Services and top-level DNS names (was: Re: Update of RFC 2606
In-reply-to: Your message of "Sun, 06 Jul 2008 22:12:53 -0400." <alpine.BSF.1.10.0807062209390.8247@simone.iecc.com>
Date: Mon, 07 Jul 2008 12:25:50 +1000
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> > 	The problem is that user@ai is not globally unique.
> >
> > 	MIT users will have problems talk to user@ai when "ai" means
> > 	Anguilla.  The is a current security issue.
> >
> > 	If / when MIT stop using ai.mit.edu, "user@ai" will not longer
> > 	mean user@ai.mit.edu.  This will mean that any configuration file
> > 	that has "user@ai" will now, suddenly, get a different meaning.
> > 	This is a latent security issue.
> 
> If by "latent" you mean "so obscure that in the ten years that there's 
> been A and MX records at TLDs nobody's been affected" I guess I agree.

	Again you are asserting that no one has ever been effected.

	By latent, I mean it will cause problems in the future when the
	conditions described are met.

	Not every action has a immediate consequence.  Some consequences
	can happen years after the initial action was taken.

	The consequences here are foreseeable but not necessarially
	obvious to everyone affected.

	Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews@isc.org
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