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Re: [Anima] Errata 6642: Re: Registrar to MASA connections: SNI required

Michael Richardson <mcr+ietf@sandelman.ca> Fri, 02 February 2024 13:49 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Toerless Eckert <tte@cs.fau.de>
cc: anima@ietf.org, Brian E Carpenter <brian.e.carpenter@gmail.com>, rwilton@cisco.com
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Date: Fri, 02 Feb 2024 08:49:06 -0500
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Subject: Re: [Anima] Errata 6642: Re: Registrar to MASA connections: SNI required
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Toerless Eckert <tte@cs.fau.de> wrote:
    > Lets maybe finalize next tuesday during our meeting.

    > In general i think that whenever a TLS initiator did learn the TLS
    > responder through a URL with a domain name, then it needs to insert the
    > domain name as the SNI "server_name".

    > If thats not an unwritten rule, then i'd like to understand why not.

I think it is.  I'm not objecting to that.
As you said, sometimes old/rusty TLS libraries don't do this.
But, the manufacturer knows that, and this can build their MASA based upon
SNI (or not) assumption, and it's fine.

But, for BRSKI-EST link, we can assume enough modern TLS to allow for SNI
based virtual hosting.

--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide

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