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Re: [kitten] Finding Kerberos Realm Descriptors in secure DNS

Greg Hudson <ghudson@mit.edu> Tue, 15 September 2015 18:36 UTC

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To: Rick van Rein <rick@openfortress.nl>, "kitten@ietf.org" <kitten@ietf.org>
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From: Greg Hudson <ghudson@mit.edu>
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Date: Tue, 15 Sep 2015 14:36:36 -0400
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Subject: Re: [kitten] Finding Kerberos Realm Descriptors in secure DNS
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On 09/15/2015 03:09 AM, Rick van Rein wrote:
> See... we're requiring DNSSEC to validate the KREALM record, and it is going to be difficult in general to rely on clients to accomadate that; they may be subjected to crummy NAT routers that interfere with, and break DNSSEC.  So, we will probably be dependent on KDCs for practical deployment of KREALM, and a KDC could use KREALM records to inspire a Server Referral in the style of RFC 6806.
> 
> So... it may be reasonable to assume that any KREALM client could work with multiple realms, because they will normally be KDCs.  And that'd mean we wouldn't need this priority or go-for-this-one flag.  Agreed?

A KDC can only return one referral, so I'm not sure what it would do
with multiple realms, with or without priorities.  Perhaps I'm missing
something.

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