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Re: [Add] [EXTERNAL] Re: Firefox DoH behaviour

Eric Rescorla <ekr@rtfm.com> Tue, 16 July 2019 19:23 UTC

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In-Reply-To: <C587AEA7-E9EF-42D7-95D6-CAD416F1BF56@nbcuni.com>
From: Eric Rescorla <ekr@rtfm.com>
Date: Tue, 16 Jul 2019 12:22:49 -0700
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To: "Deen, Glenn (NBCUniversal)" <Glenn.Deen@nbcuni.com>
Cc: Jim Reid <jim@rfc1035.com>, "add@ietf.org" <add@ietf.org>
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Subject: Re: [Add] [EXTERNAL] Re: Firefox DoH behaviour
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On Tue, Jul 16, 2019 at 11:56 AM Deen, Glenn (NBCUniversal) <
Glenn.Deen@nbcuni.com> wrote:

> Hi
>
> On Jul 16, 2019, at 1:56 PM, Eric Rescorla <ekr@rtfm.com> wrote:
>
> Sorry, this was badly written. Here's an attempt to clarify:
>
> if there is an enterprise policy that is set and it configures or enables
> DoH, then when we will respect that. If there is an enterprise policy set
> and it says nothing about DoH, then our plan is to disable DoH on the
> theory that with high probability the enterprise would want DoH off.
>
> When I refer to enterprise policy I mean:
> https://support.mozilla.org/en-US/products/firefox-enterprise/policies-customization-enterprise/policies-overview-enterprise
>
>
> Just so I understand, this looks like it only applies to enterprise
> managed desktops, or to PCs enrolled in a managed AD environment.
>

Yes.


> Is there a general means for the enterprise to communicate it’s policy for
> any Firefox instance that runs in its network?
>

Not at present.
https://tools.ietf.org/html/draft-grover-add-policy-detection-00 is an
exploration of one possible avenue, but as has been discussed somewhat
extensively, it's not a secure signal, so we're not sure how useful it is.

-Ekr

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