Re: [Resolverless-dns] Paper on Resolver-less DNS

"John Levine" <johnl@taugh.com> Fri, 16 August 2019 03:53 UTC

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Date: 15 Aug 2019 23:53:37 -0400
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From: "John Levine" <johnl@taugh.com>
To: resolverless-dns@ietf.org
Cc: sy@informatik.uni-hamburg.de
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Subject: Re: [Resolverless-dns] Paper on Resolver-less DNS
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In article <8a8754b1-c646-34fc-a13b-d69757b807f3@informatik.uni-hamburg.de>; you write:
>-=-=-=-=-=-
>
>Hi John,
>
>On 8/15/19 18:39, John Levine wrote:
>>
>> I also like the paper but it misses the largest concern with
>> resolverless DNS: it circumvents DNS based access controls.
>
>Resolver-less DNS does not circumvent DNS-based access controls. First,
>clients can configure their user agent to filter the DNS records
>retrieved via resolver-less DNS to enforce such access controls.

This strikes me as rather overoptimistic.  Sure, a sophisticated user
can set up her DNS configuration do all sorts of stuff.  But until
now, the other 99.99% of normal users just use whatever DNS
configuration their system gives them.  They don't know what DNS is,
and if a browser or other application does resolverless DNS, they
don't understand the implications or how to turn it off.

If the browser pops up a permission window, it says:

  blah blah security parp parp DNS bloop bloop
  extremely dangerous gargle gargle safety?

so they'll click OK to make it go away.

R's,
John