Re: [dns-privacy] NS names, was re-evaluation of the draft, was Re: [Fwd: New Version Notification for draft-vandijk-dprive-ds-dot-signal-and-pin-00.txt]

Shumon Huque <shuque@gmail.com> Wed, 10 June 2020 13:59 UTC

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From: Shumon Huque <shuque@gmail.com>
Date: Wed, 10 Jun 2020 09:59:24 -0400
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To: Paul Wouters <paul@nohats.ca>
Cc: Christian Huitema <huitema@huitema.net>, dns-privacy@ietf.org
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Subject: Re: [dns-privacy] NS names, was re-evaluation of the draft, was Re: [Fwd: New Version Notification for draft-vandijk-dprive-ds-dot-signal-and-pin-00.txt]
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On Wed, Jun 10, 2020 at 9:37 AM Paul Wouters <paul@nohats.ca> wrote:

>
> On Jun 10, 2020, at 07:55, Shumon Huque <shuque@gmail.com> wrote:
> >
> >
> >
> > The more I think about all the privacy leaks that have to be plugged at
> > the DNS and application layers, Tor increasingly looks better as a
> > general purpose solution (either as a network to funnel DNS messages
> > through, or even better, having zone operators locate authority servers
> > inside Tor as hidden services). It has a significant performance cost,
> > but real privacy always does.
>
> You don’t really mean tor, but you mean a shared pool of resolvers used by
> a large group that breaks the one on one relationship between queries and
> answers.
>
> It’s fine if we connect to that using DoT or DoH.
>

Well, not as good as Tor's onion routing, or real mix networks, but that
would be a step in the right direction. But pervasive network adversaries
that can observe both sides of the traffic and perform traffic correlation
attacks are still a threat.

So, ideally something should be done on the authoritative server side too.
If we configure zones on large shared hosting providers, then the hosting
provider becomes the privacy adversary or the point of coercion.

Shumon.