Re: (short version) Re: Last Call: <draft-faltstrom-uri-10.txt> (The Uniform Resource Identifier (URI) DNS Resource Record) to Proposed Standard
Viktor Dukhovni <ietf-dane@dukhovni.org> Mon, 23 February 2015 15:52 UTC
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Date: Mon, 23 Feb 2015 15:52:41 +0000
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
To: ietf@ietf.org
Subject: Re: (short version) Re: Last Call: <draft-faltstrom-uri-10.txt> (The Uniform Resource Identifier (URI) DNS Resource Record) to Proposed Standard
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On Mon, Feb 23, 2015 at 03:37:57PM +0000, Viktor Dukhovni wrote: > > I do note that having "priority" and "weight" separated is not > > well-motivated (or even explained) in either this document or in > > the original application. > > This is simply carried over verbatim from SRV, where priorities > yield strict ordering, while weights (for entries with the same > priority) support weighted load-sharing. This draft does not appear > to differ from SRV except in replacing target+port with an URI. I neglected to comment on the "Security Considerations" section. As observed in the DANE SMTP draft (draft-ietf-dane-smtp-with-dane-14 section 1.3.2) mixing DNS indirection with TLS significantly changes the security picture. The URI draft mentions the need for DNSSEC but likely understates the significance of the impact. For example, what determines whether to use TLS? The target URI, or some prior policy in the application? Must URI RRsets always be DNSSEC validated? If not what prevents downgrade attacks to HTTP? If the DNS (via DNSSEC) is a critical "trusted entity", should not then TLS use the DANE PKI (any DNS compromise cannot be compensated for by a public CA validating a URI that has been redirected to a hostile site)? So I take issue with the opening sentence of "Security Considerations". "The authors do not believe this resource record cause any new security problems." I think the use of DNS indirection via URI RRs (as also with SRV, MX, ...) profoundly changes the security model for TLS. -- Viktor.
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Mark Nottingham
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Patrik Fältström
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Mark Nottingham
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Eliot Lear
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Patrik Fältström
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Patrik Fältström
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Eliot Lear
- (short version) Re: Last Call: <draft-faltstrom-u… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Dirk-Willem van Gulik
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: (short version) Re: Last Call: <draft-faltstr… Paul Hoffman
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Mark Andrews
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: (short version) Re: Last Call: <draft-faltstr… Pete Resnick
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Andrew Newton
- Re: (short version) Re: Last Call: <draft-faltstr… Nico Williams
- Re: (short version) Re: Last Call: <draft-faltstr… Nico Williams
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Nico Williams
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Mark Nottingham
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Eliot Lear
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Eliot Lear
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Andrew Newton
- Re: (short version) Re: Last Call: <draft-faltstr… Phillip Hallam-Baker
- Re: (short version) Re: Last Call: <draft-faltstr… Eliot Lear
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Andrew Newton
- Re: (short version) Re: Last Call: <draft-faltstr… Eliot Lear
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Pete Resnick
- Re: (short version) Re: Last Call: <draft-faltstr… Nico Williams
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Nico Williams
- draft-newton-link-rr (was Re: Last Call: <draft-f… Nico Williams
- Re: draft-newton-link-rr (was Re: Last Call: <dra… Nico Williams
- Re: (short version) Re: Last Call: <draft-faltstr… Mark Andrews
- Re: (short version) Re: Last Call: <draft-faltstr… Phillip Hallam-Baker
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Mark Andrews
- Re: (short version) Re: Last Call: <draft-faltstr… Phillip Hallam-Baker
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Patrik Fältström
- Re: draft-newton-link-rr (was Re: Last Call: <dra… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: draft-newton-link-rr (was Re: Last Call: <dra… Andrew Newton
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: draft-newton-link-rr (was Re: Last Call: <dra… Patrik Fältström
- Re: Last Call: <draft-faltstrom-uri-10.txt> (The … Mark Andrews
- Re: (short version) Re: Last Call: <draft-faltstr… Mark Nottingham
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Mark Nottingham
- Re: (short version) Re: Last Call: <draft-faltstr… Pete Resnick
- Re: (short version) Re: Last Call: <draft-faltstr… Pete Resnick
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Eliot Lear
- Re: (short version) Re: Last Call: <draft-faltstr… Pete Resnick
- Re: (short version) Re: Last Call: <draft-faltstr… Viktor Dukhovni
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: (short version) Re: Last Call: <draft-faltstr… Sam Hartman
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… John C Klensin
- Re: (short version) Re: Last Call: <draft-faltstr… Eliot Lear
- Re: (short version) Re: Last Call: <draft-faltstr… Eliot Lear
- Re: (short version) Re: Last Call: <draft-faltstr… Nico Williams
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström
- Re: (short version) Re: Last Call: <draft-faltstr… Pete Resnick
- Re: (short version) Re: Last Call: <draft-faltstr… Pete Resnick
- Where to do the work was Re: (short version) Re: … t.p.
- Re: (short version) Re: Last Call: <draft-faltstr… Patrik Fältström