Re: [perpass] A reminder, the Network is the Enemy...

Stephane Bortzmeyer <bortzmeyer@nic.fr> Wed, 27 November 2013 15:06 UTC

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Date: Wed, 27 Nov 2013 16:05:48 +0100
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Nicholas Weaver <nweaver@icsi.berkeley.edu>
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Subject: Re: [perpass] A reminder, the Network is the Enemy...
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On Wed, Nov 20, 2013 at 12:42:53PM -0800,
 Nicholas Weaver <nweaver@icsi.berkeley.edu> wrote 
 a message of 70 lines which said:

> http://www.wired.com/opinion/2013/11/this-is-how-the-internet-backbone-has-been-turned-into-a-weapon/

You mention DNSSEC twice, as a solution against some man-on-the-side
attacks (injecting false DNS answers).

The Schneier paper
<https://www.schneier.com/blog/archives/2013/10/how_the_nsa_att.html>
about QUANTUM mentions packet injection but not the DNS. We don't know
if the NSA does DNS poisoning (but we may assume they - and other
actors - do it).

However, if the attacker is the NSA, we have to take into account the
possibility that they can sign data with the root's private key, which
is under US management. Therefore, is DNSSEC still useful?

May be, in these cases:

* the attacker may consider that DNSSEC validation is so uncommon
today that it is not worth the work to inject spoofed RRSIG

* some people may have trust anchors located at lower levels (some
registries do publish them for instance
<http://www.afnic.fr/fr/certificats/>).  Do you think it is
technically sound? Many people decided not to publish these trust
anchors, because of the management costs and risks, but it was before
Snowden. May be we should actively recommend the publication of such
"lower" trust anchors now?