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[DNSOP] Re: [Ext] Persistence of DCV, including for Delegated DCV (for draft-ietf-dnsop-domain-verification-techniques)

John R Levine <johnl@taugh.com> Fri, 30 May 2025 21:15 UTC

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Date: Fri, 30 May 2025 17:15:30 -0400
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From: John R Levine <johnl@taugh.com>
To: Paul Wouters <paul@nohats.ca>
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Subject: [DNSOP] Re: [Ext] Persistence of DCV, including for Delegated DCV (for draft-ietf-dnsop-domain-verification-techniques)
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On Fri, 30 May 2025, Paul Wouters wrote:
>> and if you're going to do that, you know where to find ACME.
>
> Indeed, but is a cron job really a method to confirm continued
> acceptance of a service? It requires credentials to make a DNS
> change and in a way only weakens the security model. (just like ACME
> using DNS-01 doesn't add anything to just publishing TLSA records in
> the DNS)

Well, it does show that someone or something is awake enough to run the 
cron job while I know from personal experience that TLSA records can go 
stale for quite a while.  But we're all waving our hands here.

R's,
John

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