Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-20 Thread Stephen Farrell
On 20/04/15 22:03, Viktor Dukhovni wrote: > On Mon, Apr 20, 2015 at 08:36:39PM +0100, Stephen Farrell wrote: > >>> Can we move forward with s/SSL 3.0/TLS 1.0/g? This modifies just >>> the first paragraph of 8.1 and is not a big deal. >>> >>> I don't recall seeing any other recent BCPs at issue

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-20 Thread Viktor Dukhovni
On Mon, Apr 20, 2015 at 08:36:39PM +0100, Stephen Farrell wrote: > > Can we move forward with s/SSL 3.0/TLS 1.0/g? This modifies just > > the first paragraph of 8.1 and is not a big deal. > > > > I don't recall seeing any other recent BCPs at issue in this thread. > > One could encourage adheri

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-20 Thread Stephen Farrell
On 20/04/15 17:34, Viktor Dukhovni wrote: > On Mon, Apr 20, 2015 at 05:08:45PM +0100, Stephen Farrell wrote: > >> On 20/04/15 17:01, Viktor Dukhovni wrote: > >>> Should I cut another version with editorial changes based on your >>> review prior to IETF LC? >> >> I guess that's one for the WG ch

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-20 Thread Olafur Gudmundsson
> On Apr 20, 2015, at 12:34 PM, Viktor Dukhovni wrote: > > On Mon, Apr 20, 2015 at 05:08:45PM +0100, Stephen Farrell wrote: > >> On 20/04/15 17:01, Viktor Dukhovni wrote: > >>> Should I cut another version with editorial changes based on your >>> review prior to IETF LC? >> >> I guess that's

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-20 Thread Viktor Dukhovni
On Mon, Apr 20, 2015 at 05:08:45PM +0100, Stephen Farrell wrote: > On 20/04/15 17:01, Viktor Dukhovni wrote: > > Should I cut another version with editorial changes based on your > > review prior to IETF LC? > > I guess that's one for the WG chairs. OK. Any word from the chairs then? > But I

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-20 Thread Stephen Farrell
On 20/04/15 17:01, Viktor Dukhovni wrote: > > Should I cut another version with editorial changes based on your > review prior to IETF LC? I guess that's one for the WG chairs. But I don't think we bottomed out on the TLS versioning thing and the relationship with recent related BCPs did we?

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-20 Thread Viktor Dukhovni
Should I cut another version with editorial changes based on your review prior to IETF LC? -- Viktor. ___ dane mailing list dane@ietf.org https://www.ietf.org/mailman/listinfo/dane

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-18 Thread stephen . farrell
On Sat Apr 18 03:25:47 2015 GMT+0100, Viktor Dukhovni wrote: > On Sat, Apr 18, 2015 at 12:10:55AM +0100, Stephen Farrell wrote: > > > On 17/04/15 17:39, Viktor Dukhovni wrote: > > > > > Well, though I don't know why we'd care protecting about the address > > > records also (given routing layer a

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Paul Wouters
On Sat, 18 Apr 2015, Stephen Farrell wrote: On 17/04/15 21:41, Nico Williams wrote: As Paul says, there is a UI here: logs for sysadmins, Received headers for users and sysadmins. Paul's initial mail on this referred to UI and downgrade attack possibilities. I don't believe there is any such

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Viktor Dukhovni
On Sat, Apr 18, 2015 at 12:10:55AM +0100, Stephen Farrell wrote: > On 17/04/15 17:39, Viktor Dukhovni wrote: > > > Well, though I don't know why we'd care protecting about the address > > records also (given routing layer attacks), ... There is (full > > disclosure) a corner case where the addres

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Stephen Farrell
On 17/04/15 21:41, Nico Williams wrote: > As Paul says, there is a UI here: logs for sysadmins, Received headers > for users and sysadmins. Paul's initial mail on this referred to UI and downgrade attack possibilities. I don't believe there is any such UI related downgrade attack in this case, b

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Stephen Farrell
On 17/04/15 17:39, Viktor Dukhovni wrote: > Well, though I don't know why we'd care protecting about the address > records also (given routing layer attacks), ... There is (full > disclosure) a corner case where the address records are not secure, > but the TLSA records are. Right, that's what

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Nico Williams
On Fri, Apr 17, 2015 at 01:17:45PM +0100, Stephen Farrell wrote: > I still think I've been answered but just to clarify. The context > here has no UI at all given it's between MTAs. And the people who > wanted to experiment I believe wanted to play about with no DNSSEC > at all, rather than with lo

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Nico Williams
On Fri, Apr 17, 2015 at 04:39:42PM +, Viktor Dukhovni wrote: > Well, though I don't know why we'd care protecting about the address > records also (given routing layer attacks), ... There is (full > disclosure) a corner case where the address records are not secure, > but the TLSA records are.

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Nico Williams
On Fri, Apr 17, 2015 at 12:47:45PM -0400, Olafur Gudmundsson wrote: > > On Apr 16, 2015, at 2:28 PM, Stephen Farrell > > wrote: > > On 16/04/15 18:37, Viktor Dukhovni wrote: > >> On Thu, Apr 16, 2015 at 04:27:33PM +0100, Stephen Farrell wrote: > >>> (1) What is the behaviour when all RRs required

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Viktor Dukhovni
On Fri, Apr 17, 2015 at 12:47:45PM -0400, Olafur Gudmundsson wrote: > > My understanding is that some people wanted to experiment with TLSA > > without having to have had DNSSEC deployed. But I take your answer > > to be that no such behaviour is defined here, which is fine. So > > consider this o

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Olafur Gudmundsson
> On Apr 16, 2015, at 2:28 PM, Stephen Farrell > wrote: > > > Hiya, > > On 16/04/15 18:37, Viktor Dukhovni wrote: >> On Thu, Apr 16, 2015 at 04:27:33PM +0100, Stephen Farrell wrote: >> >>> (1) What is the behaviour when all RRs required for this are >>> published except for no DNSSEC RRs? I

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Viktor Dukhovni
On Fri, Apr 17, 2015 at 01:58:34PM +0100, Stephen Farrell wrote: > > Note that for this protocol, both the address records and the TLSA > > records of the MX host are DNSSEC-validated, since when the address > > records are not, we don't even ask for the TLSA RRs. So I am not > > sure what you ha

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Stephen Farrell
Hiya, On 16/04/15 19:45, Viktor Dukhovni wrote: > On Thu, Apr 16, 2015 at 07:28:58PM +0100, Stephen Farrell wrote: > >>> While, the A records don't a-priori need to be secured, we skip >>> TLSA records for MX hosts whose A/ records are "insecure" in >>> order to avoid interop problems with (

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Paul Wouters
On Fri, 17 Apr 2015, Stephen Farrell wrote: My understanding is that some people wanted to experiment with TLSA without having to have had DNSSEC deployed. But I take your answer to be that no such behaviour is defined here, which is fine. So consider this one answered. I go back and forth wit

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Stephen Farrell
On 16/04/15 20:36, Jeremy Harris wrote: > On 16/04/15 19:28, Stephen Farrell wrote: - 2.2, Could "authenticated" here mean mutually authenticated with TLS client certs? If not, maybe say so. (And for the last sentence before 2.2.1, what about the client cert names - what's don

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-17 Thread Stephen Farrell
On 16/04/15 20:10, Paul Wouters wrote: > On Thu, 16 Apr 2015, Stephen Farrell wrote: > >> My understanding is that some people wanted to experiment with TLSA >> without having to have had DNSSEC deployed. But I take your answer >> to be that no such behaviour is defined here, which is fine. So >

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-16 Thread Jeremy Harris
On 16/04/15 19:28, Stephen Farrell wrote: >>> - 2.2, Could "authenticated" here mean mutually authenticated >>> with TLS client certs? If not, maybe say so. (And for the >>> last sentence before 2.2.1, what about the client cert names >>> - what's done with those?) >> >> There is no protocol for sp

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-16 Thread Paul Wouters
On Thu, 16 Apr 2015, Stephen Farrell wrote: My understanding is that some people wanted to experiment with TLSA without having to have had DNSSEC deployed. But I take your answer to be that no such behaviour is defined here, which is fine. So consider this one answered. I go back and forth wit

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-16 Thread Viktor Dukhovni
On Thu, Apr 16, 2015 at 07:28:58PM +0100, Stephen Farrell wrote: > > While, the A records don't a-priori need to be secured, we skip > > TLSA records for MX hosts whose A/ records are "insecure" in > > order to avoid interop problems with (Microsoft's and similar) > > domains whose non-DNSSEC

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-16 Thread Stephen Farrell
Hiya, On 16/04/15 18:37, Viktor Dukhovni wrote: > On Thu, Apr 16, 2015 at 04:27:33PM +0100, Stephen Farrell wrote: > >> (1) What is the behaviour when all RRs required for this are >> published except for no DNSSEC RRs? I have heard tell of some >> people who would like to experiment in that way

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-16 Thread Viktor Dukhovni
On Thu, Apr 16, 2015 at 01:50:42PM -0400, Paul Wouters wrote: > On Thu, 16 Apr 2015, Viktor Dukhovni wrote: > > >In any case this draft was ready (and has been largely unchanged) > >for about a year now, *before* all the fuss about SSL 3.0. Clients > >MUST support at least TLS 1.0 (to use SNI).

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-16 Thread Paul Wouters
On Thu, 16 Apr 2015, Viktor Dukhovni wrote: In any case this draft was ready (and has been largely unchanged) for about a year now, *before* all the fuss about SSL 3.0. Clients MUST support at least TLS 1.0 (to use SNI). Servers MAY support SSL 3.0 (allowing them to publish TLSA RRs with whate

Re: [dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-16 Thread Viktor Dukhovni
On Thu, Apr 16, 2015 at 04:27:33PM +0100, Stephen Farrell wrote: > (1) What is the behaviour when all RRs required for this are > published except for no DNSSEC RRs? I have heard tell of some > people who would like to experiment in that way, and would > like to know if the WG have a clear answer

[dane] AD review of draft-ietf-dane-smtp-with-dane

2015-04-16 Thread Stephen Farrell
Hiya, Sorry for being slow with this but I've finally gotten my AD review for this done. (See below.) A couple of things to check before starting IETF LC: (1) What is the behaviour when all RRs required for this are published except for no DNSSEC RRs? I have heard tell of some people who would