Re: [DNSOP] [dns-privacy] New: draft-bertola-bcp-doh-clients

Christian Huitema <huitema@huitema.net> Mon, 11 March 2019 04:14 UTC

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To: nalini elkins <nalini.elkins@e-dco.com>
Cc: doh@ietf.org, Vittorio Bertola <vittorio.bertola=40open-xchange.com@dmarc.ietf.org>, dnsop@ietf.org, dns-privacy@ietf.org, "Ackermann, Michael" <mackermann@bcbsm.com>, Stephen Farrell <stephen.farrell@cs.tcd.ie>
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From: Christian Huitema <huitema@huitema.net>
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Date: Sun, 10 Mar 2019 21:14:02 -0700
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Subject: Re: [DNSOP] [dns-privacy] New: draft-bertola-bcp-doh-clients
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On 3/10/2019 8:25 PM, nalini elkins wrote:
>  > Similarly, putting DNS in user space allows for immediate adoption
> of DNSSEC and privacy enhancements, even when the operating system or
> the local network does not support them  
>
> At enterprises (banks, insurance, etc) on their internal networks,
> people run their own DNS servers which may resolve for both internal
> and external sites.
>
> We were recently talking to a Fortune 50 company in the United States
> about what might happen you install a version of the browser which
> uses DNS-over-HTTPS automatically.  (Clearly, this applies to any
> variant.)
>
> The questions that the Fortune 50 company architect asked were
> something like this:
>
> 1. You mean that DNS could be resolved outside my enterprise?
>
> 2. So whoever that is that resolves my DNS sees the pattern and
> frequency of what sites my company goes to?
>
> 3. How do I change this?


There are a bunch of conflicting requirements here, and it would be good
to tease out the contradictions. Consider the following cases:

1) I am using my phone, and using application-X.

2) I am at home, using application-X on my home computer.

3) I am using Wi-Fi in a hotel, and using application-X.

4) I am using my work laptop on the enterprise network, and using
application-X

5) I am using my work laptop in a hotel, and using application-X

6) I am using my work laptop on the network of a customer, and using
application-X.

Today, plenty of people claim the right to control how I use the DNS: my
phone carrier, my ISP at home, the company that got the contract to
manage the hotel's Wi-Fi, the IT manager for my company's laptop, the IT
manager for the company that I am visiting. Out of those, there is just
one scenario for which the claim has some legitimacy: if the company
pays for my laptop and own the laptop, yes of course it has a legitimate
claim to control how I am using it. Otherwise, I, the user, get to
decide. If I like the application's setting better than the network's
default, then of course I expect those settings to stick.

-- Christian Huitema