[DNSOP] Re: Client authentication for encrypted DNS — interest check

Hi Aitor,

You may want to take a look at this (expired but recent) draft which is an attempt to answer similar questions.

https://datatracker.ietf.org/doc/draft-jaked-cared/

I agree these are questions worth answering.

Joe

On 10 Jul 2026, at 13:24, Aitor Santos <[email protected]> wrote:



Hi all,

I'm working on a draft addressing a gap in the current encrypted DNS ecosystem: while DoH [RFC8484], DoT [RFC7858], and DoQ [RFC9250] protect DNS queries from on-path observers, none of them define a standard mechanism for a resolver to authenticate its clients.

This matters in practice for private and restricted resolvers — self-hosted instances, enterprise deployments, ISP subscription services, and parental control resolvers — where the operator has a legitimate need to limit access to authorized clients only. Today
each deployment invents its own approach (token in the URL, IP allowlist, custom headers), with no interoperability.

The draft (draft-santos-dnsop-encrypted-dns-client-auth) describes the problem space, the requirements any solution must satisfy, and the constraints each transport imposes on an authentication mechanism.

Before I submit the -00, I wanted to check:

• Is there existing or ongoing work in this area I should be aware of?

• Is there appetite in the WG for a problem statement document, or would a solutions-oriented draft be more appropriate?

Happy to share a pre-submission version off-list if anyone wants to take a look.

Thanks,

Aitor Santos

Técnico SOC

https://www.irontec.com

Uribitarte Kalea, 6, 48001 Bilbo, Bizkaia

+ 34 944 048 182 — [email protected] — www.irontec.com

LinkedIn — GitHub

Encontrará información detallada sobre el tratamiento de sus datos personales en www.irontec.com

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