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[Doh] IP address certificates

Paul Hoffman <paul.hoffman@icann.org> Fri, 15 March 2019 16:21 UTC

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From: Paul Hoffman <paul.hoffman@icann.org>
To: DoH WG <doh@ietf.org>
Thread-Topic: IP address certificates
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Date: Fri, 15 Mar 2019 16:21:55 +0000
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References: <CAHbrMsCNyeabhk0sVexOHVedVkgG2dvV9T8wWL++om5juAUvEw@mail.gmail.com> <ED16E0D8-BBCB-4316-A116-BA8513F523A3@sky.uk>
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Subject: [Doh] IP address certificates
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For clarity: in draft-ietf-doh-resolver-associated-doh, IP address certificates are only used when getting the DoH servers using HTTPS. The format for that query is:
   https://IPADDRESSGOESHERE/.well-known/doh-servers-associated/


On Mar 15, 2019, at 6:41 AM, Winfield, Alister <Alister.Winfield=40sky.uk@dmarc.ietf.org> wrote:
> 	• IP-address certificates
>  
> Bad ! Especially if the less enlightened think to try to create a certificate for a private IP. Very bad idea.

Can you say why they are bad? They are not common, but they are certainly available and have proven useful in some environments for a long time.

--Paul Hoffman

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