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Re: [DNSOP] [internet-drafts@ietf.org: I-D Action: draft-rescorla-tls-esni-00.txt]

Tim Wicinski <tjw.ietf@gmail.com> Thu, 19 July 2018 20:06 UTC

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From: Tim Wicinski <tjw.ietf@gmail.com>
Date: Thu, 19 Jul 2018 16:06:36 -0400
Message-ID: <CADyWQ+FK-qd8mceK9bvcdmL6_Vuy-RN1_Q_iveW05TD7CZ+YLg@mail.gmail.com>
To: Ray Bellis <ray@bellis.me.uk>
Cc: dnsop <dnsop@ietf.org>
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Subject: Re: [DNSOP] [internet-drafts@ietf.org: I-D Action: draft-rescorla-tls-esni-00.txt]
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What Ray Says

Also, I have SSL certs right now (sadly but that's another talk) for
aws-region-y.saas.com,  *.saas.com *.foo.saas.com, *.saasdb.com etc.
and let's say we want a ssl cert of aws-region-y.saas.com with all the
wildcards as SNI names.

On Thu, Jul 19, 2018 at 3:39 PM, Ray Bellis <ray@bellis.me.uk> wrote:

> On 19/07/2018 15:36, Patrick McManus wrote:
>
> > [replying to myself] I see now that the wildcards are part of things
> > like axfr which form an open definition for interoperability.. so they
> > are a wire protocol element of a sort. Thanks!
>
> Kind of.
>
> Wildcards are carried in AXFR so that primary and secondary name servers
> both know to synthesise the required records.
>
> It is technically possible to explicitly ask for `*.example.com` to test
> for the presence of a wildcard, but otherwise the synthesis is done
> entirely on the server side and the `*` does *not* usually appear in the
> DNS wire protocol.
>
> Ray
>
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