Re: [TLS] draft-rescorla-tls-renegotiate.txt
Martin Rex <mrex@sap.com> Sat, 07 November 2009 00:39 UTC
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From: Martin Rex <mrex@sap.com>
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To: rrelyea@redhat.com
Date: Sat, 07 Nov 2009 01:40:04 +0100
In-Reply-To: <4AF497C5.5060801@REDHAT.COM> from "Robert Relyea" at Nov 6, 9 01:40:21 pm
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Cc: tls@ietf.org
Subject: Re: [TLS] draft-rescorla-tls-renegotiate.txt
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Robert Relyea wrote: > > >> Even more importantly, SSLv3 does not support extensions. > >> > > You're correct. SSLv3 allows extensions in the ClientHello that > > are to be ignored, but it does not support them in ServerHello. > > In practice, there are too many servers that blow up even on extensions > in clientHellos. So many that NSS only uses extensions in TLS, not in SSL3. I have no data and no experiences about interop issues with >SSLv3. Networking or multimedia appliances might be the hardest to get upgraded, although they're quite unlikely themselves to use client-cert authentication, much less through renegotiation. We shouldn't unnecessarily create interop-problems with them (or force them to drop to plain http). What exactly do you mean by "only uses extensions in TLS"? TLS extensions must be asserted in the ClientHello, and a SSLv3 server is expected to ignore them. Are you rather referring to fallback/reconnect-heuristics in Browsers that will automatically re-try a failed TLS-handshake with TLS extensions by a SSLv3 handshake without TLS extensions. Which Browsers&Versions do that, actually (I simply don't know)? Such a fallback would certainly help, but is entirely an apps issue. It is much less likely to be present in programmatic clients, I assume. -Martin
- [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS renegotiation issue Marsh Ray
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Marsh Ray
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Florian Weimer
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Michael D'Errico
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS renegotiation issue Florian Weimer
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- [TLS] TLS or HTTP issue? (was: TLS renegotiation … Nikos Mavrogiannopoulos
- Re: [TLS] TLS renegotiation issue Yngve N. Pettersen (Developer Opera Software ASA)
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Marsh Ray
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Cullen Jennings
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Michael Gray
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS or HTTP issue? Florian Weimer
- Re: [TLS] TLS or HTTP issue? Bruno Harbulot
- Re: [TLS] TLS renegotiation issue Blumenthal, Uri - 0662 - MITLL
- Re: [TLS] TLS or HTTP issue? Peter Saint-Andre
- Re: [TLS] TLS or HTTP issue? Martin Rex
- Re: [TLS] TLS or HTTP issue? (was: TLS renegotiat… Nicolas Williams
- Re: [TLS] TLS or HTTP issue? (was: TLS renegotiat… Nathaniel W Filardo
- Re: [TLS] TLS or HTTP issue? Marsh Ray
- Re: [TLS] TLS or HTTP issue? (was: TLS renegotiat… Nicolas Williams
- [TLS] draft-rescorla-tls-renegotiate.txt Martin Rex
- Re: [TLS] draft-rescorla-tls-renegotiate.txt Michael D'Errico
- Re: [TLS] draft-rescorla-tls-renegotiate.txt Martin Rex
- Re: [TLS] draft-rescorla-tls-renegotiate.txt Martin Rex
- Re: [TLS] draft-rescorla-tls-renegotiate.txt Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS renegotiation issue Marsh Ray
- Re: [TLS] draft-rescorla-tls-renegotiate.txt Robert Relyea
- Re: [TLS] draft-rescorla-tls-renegotiate.txt Michael D'Errico
- Re: [TLS] TLS or HTTP issue? Dean Anderson
- Re: [TLS] TLS renegotiation issue David Harrington
- [TLS] To API or not (Re: TLS renegotiation issue) Nicolas Williams
- Re: [TLS] draft-rescorla-tls-renegotiate.txt Marsh Ray
- [TLS] Simple way to drop re-negotiation in HTTP (… Nicolas Williams
- Re: [TLS] TLS renegotiation issue Michael D'Errico
- Re: [TLS] TLS renegotiation issue Martin Rex
- Re: [TLS] draft-rescorla-tls-renegotiate.txt Martin Rex
- Re: [TLS] Simple way to drop re-negotiation in HT… Marsh Ray
- Re: [TLS] TLS or HTTP issue? Nikos Mavrogiannopoulos
- Re: [TLS] TLS or HTTP issue? Marsh Ray
- Re: [TLS] TLS renegotiation issue Michael D'Errico
- Re: [TLS] TLS renegotiation issue Marsh Ray
- Re: [TLS] TLS or HTTP issue? Michael D'Errico
- Re: [TLS] Test Server (was TLS renegotiation issu… Michael D'Errico
- Re: [TLS] Test Server (was TLS renegotiation issu… Michael D'Errico
- Re: [TLS] TLS renegotiation issue Nagendra Modadugu
- Re: [TLS] TLS renegotiation issue Eric Rescorla
- Re: [TLS] TLS or HTTP issue? Nicolas Williams
- Re: [TLS] TLS renegotiation issue Nicolas Williams
- Re: [TLS] TLS or HTTP issue? Florian Weimer
- Re: [TLS] Simple way to drop re-negotiation in HT… Nicolas Williams
- Re: [TLS] TLS or HTTP issue? Chris Newman
- Re: [TLS] TLS or HTTP issue? (was: TLS renegotiat… Chris Newman
- Re: [TLS] TLS renegotiation issue Bodo Moeller
- Re: [TLS] TLS or HTTP issue? Nikos Mavrogiannopoulos
- [TLS] Comments on draft-rescorla-tls-renegotiate Nicolas Williams
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… Martin Rex
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… David-Sarah Hopwood
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… David-Sarah Hopwood
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… David-Sarah Hopwood
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… Nicolas Williams
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… Nicolas Williams
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… Nicolas Williams
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… Nelson B Bolyard
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… David-Sarah Hopwood
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… David-Sarah Hopwood
- Re: [TLS] Comments on draft-rescorla-tls-renegoti… Bodo Moeller