Re: [Stox] Stephen Farrell's IESG feedback on draft-ietf-stox-core
Peter Saint-Andre <stpeter@stpeter.im> Mon, 10 February 2014 22:52 UTC
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Date: Mon, 10 Feb 2014 15:52:11 -0700
From: Peter Saint-Andre <stpeter@stpeter.im>
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To: Stephen Farrell <stephen.farrell@cs.tcd.ie>, The IESG <iesg@ietf.org>
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Cc: stox@ietf.org
Subject: Re: [Stox] Stephen Farrell's IESG feedback on draft-ietf-stox-core
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On 2/10/14, 3:20 PM, Stephen Farrell wrote: > > Hi Peter, > > On 02/10/2014 06:24 PM, Peter Saint-Andre wrote: >> ( + STOX WG since one of the issues might deserve broader discussion ) >> >> Hi Stephen, thanks for your review: >> >> https://datatracker.ietf.org/doc/draft-ietf-stox-core/ballot/ >> >> You wrote in part: >> >> - I wondered why you didn't just say that (D)TLS SHOULD >> be used/supported between gateways. Given that all the >> relevant bits of code are likely to support that, wouldn't >> it be a good thing? >> >> Yes, that seems eminently reasonable. > > Just to be clear - the above is the only DISCUSS point. Yep. >> - Has anyone thought about confusability in the name >> mappings? I expected to see a bit of text in the >> security considerations but didn't see it. >> >> Confusion is always possible. :-) Were you thinking about confusable >> characters from Unicode, or something else? > > Right. Maybe its all there already and I just didn't see > if in the mapping stuff, or maybe not. I'm not sure. Section 10.5 of draft-ietf-precis-framework has some very nice text about visually similar characters. We could borrow from that. >> - It seems a shame to not be able to gateway when the To is >> a sips URI at all but I understand that some loss of >> security is inevitable for cases like this. Is there any >> work planned for an update that would allow gatewaying for >> such cases, e.g. if the 1st XMPP server is the one to which >> the user is connected and the user is connected using >> XMPP/TLS? >> >> Hmm. I cannot say that I am aware of planning for updates to provide >> more secure gatewaying, although folks active in the STOX WG might be >> thinking along those lines. >> >> Depending on the deployment architecture, I think there are cases where >> it is *possible* to TLS-protect all the hops. For instance, if >> sip.example.org has a direct server-to-server connection to >> xmpp.example.com (no intermediate hops) and both organizations agree to >> force the use of TLS for client connections (e.g., via SLA), then I >> suppose that sip.example.com could honor 'sips' URIs when sending >> traffic to xmpp.example.com. However, such an arrangement is rare enough >> right now that I don't know if it is worth mentioning. > > Fair enough. I can see that detecting that you (probably) have > all (D)TLS hops might be tricky and error prone. That's how I see it. Oh, and we at least need to mention DTLS for the UDP cases, though (see Section 5 of draft-ietf-stox-core). Peter -- Peter Saint-Andre https://stpeter.im/
- [Stox] Stephen Farrell's IESG feedback on draft-i… Peter Saint-Andre
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Stephen Farrell
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Peter Saint-Andre
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Peter Saint-Andre
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Stephen Farrell
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Peter Saint-Andre
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Stephen Farrell
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Peter Saint-Andre