Re: [TLS] [Last-Call] Last Call: <draft-ietf-tls-oldversions-deprecate-09.txt> (Deprecating TLSv1.0 and TLSv1.1) to Best Current Practice

"Ackermann, Michael" <MAckermann@bcbsm.com> Fri, 04 December 2020 04:05 UTC

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From: "Ackermann, Michael" <MAckermann@bcbsm.com>
To: "BRUNGARD, DEBORAH A" <db3546@att.com>, "STARK, BARBARA H" <bs7652@att.com>, 'Watson Ladd' <watsonbladd@gmail.com>
CC: 'Peter Gutmann' <pgut001@cs.auckland.ac.nz>, 'Eliot Lear' <lear=40cisco.com@dmarc.ietf.org>, "'last-call@ietf.org'" <last-call@ietf.org>, "'tls-chairs@ietf.org'" <tls-chairs@ietf.org>, "'draft-ietf-tls-oldversions-deprecate@ietf.org'" <draft-ietf-tls-oldversions-deprecate@ietf.org>, "'tls@ietf.org'" <tls@ietf.org>
Thread-Topic: [Last-Call] [TLS] Last Call: <draft-ietf-tls-oldversions-deprecate-09.txt> (Deprecating TLSv1.0 and TLSv1.1) to Best Current Practice
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Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/ILEN-68jN3PeRvpKAobS-l_h6GM>
Subject: Re: [TLS] [Last-Call] Last Call: <draft-ietf-tls-oldversions-deprecate-09.txt> (Deprecating TLSv1.0 and TLSv1.1) to Best Current Practice
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Deborah

Thanks so much for your informative and positive message.

I have not followed the OPs area too much, but will make an effort to do so now.   Any specific drafts you might suggest, I will review.   In particular,  I am interested in what specific IPv6 document from the OPs area you refer too?



I took a look at the ISOC IPv6 doc you listed.   Interesting but it appears to be quite old.   Do you feel it is still relevant?    Enterprises need a lot of info on IPv6 and I want to point them in the most effective directions.

By increasing visibility, do you mean ways to get Enterprises more involved or aware of IETF?     I can sadly say none that have yet been effective, but I do intend to keep trying.   Perhaps you have ideas?



And finally, I checked out your Pragmatic Link.  Still laughing, even though it unfortunately seems to have very little relevance to my world 😊



Once again I really appreciate your constructive comments and  information.



Mike



-----Original Message-----
From: BRUNGARD, DEBORAH A <db3546@att.com>
Sent: Thursday, December 3, 2020 5:10 PM
To: STARK, BARBARA H <bs7652@att.com>om>; 'Watson Ladd' <watsonbladd@gmail.com>om>; Ackermann, Michael <MAckermann@bcbsm.com>
Cc: 'Peter Gutmann' <pgut001@cs.auckland.ac.nz>nz>; 'Eliot Lear' <lear=40cisco.com@dmarc.ietf.org>rg>; 'last-call@ietf.org' <last-call@ietf.org>rg>; 'tls-chairs@ietf.org' <tls-chairs@ietf.org>rg>; 'draft-ietf-tls-oldversions-deprecate@ietf.org' <draft-ietf-tls-oldversions-deprecate@ietf.org>rg>; 'tls@ietf.org' <tls@ietf.org>
Subject: RE: [Last-Call] [TLS] Last Call: <draft-ietf-tls-oldversions-deprecate-09.txt> (Deprecating TLSv1.0 and TLSv1.1) to Best Current Practice



[External email]





As Barbara builds her confidence for the IETF list and while we have Mike's attention-



Mike, you commented "More, it is a lack of understanding of how things work within Enterprise Networks and the lack of Enterprise engagement in Standards Development processes. And finally, this may not be a gap that the IETF should care about or address, but someone should, IMHO."



I wanted to +1 on to Barbara's message - many of us will say - "we do care". As IETF is "huge" (for many operators/users that is the biggest bottleneck on participating), not sure if you follow the ops area (I'm a routing AD, but ops always has my attention😊), they have several documents on enterprises. Currently a document on the impact of TLS1.3 on operational network security practices. They also have an IPv6 one. I think in all the Areas (I know best the routing area), we encourage operators and users to participate. If you have suggestions - we are interested.



How to increase visibility? Do you have suggestions? Liaisons? ISOC? When RFC7381 (Enterprise IPv6) was done, it was an ISOC blog:

https://www.internetsociety.org/blog/2014/10/new-rfc-7381-enterprise-ipv6-deployment-guidelines/



Possibly this draft should be a blog? Suggestions?



Thanks again for the interesting thread- Deborah for some humor - I'm still stumbling on the draft's requirement "Pragmatically, clients MUST NOT send". I'm not sure operationally how to ensure pragmatic client behavior - maybe a "pragmatic client" profile😊 I'll save that question for my ballot comment. And of course a google of pragmatic is very entertaining:

https://www.google.com/search?q=pragmatic&tbm=isch&source=iu&ictx=1&fir=UnkLahjDGGZYtM%252C2VmBAP_98FtW_M%252C%252Fm%252F0c6h9&vet=1&usg=AI4_-kQHPVOk9B-3gfzcXUP1bBCiuOQ5TQ&sa=X&ved=2ahUKEwjxqN-W1rLtAhXKhK0KHWuFBGYQ_B16BAgrEAE#imgrc=WzKrFQWEFvjiWM







-----Original Message-----

From: last-call <last-call-bounces@ietf.org<mailto:last-call-bounces@ietf.org>> On Behalf Of STARK, BARBARA H

Sent: Thursday, December 3, 2020 12:03 PM

To: 'Watson Ladd' <watsonbladd@gmail.com<mailto:watsonbladd@gmail.com>>; 'Ackermann, Michael' <MAckermann@bcbsm.com<mailto:MAckermann@bcbsm.com>>

Cc: 'Peter Gutmann' <pgut001@cs.auckland.ac.nz<mailto:pgut001@cs.auckland.ac.nz>>; 'Eliot Lear' <lear=40cisco.com@dmarc.ietf.org<mailto:lear=40cisco.com@dmarc.ietf.org>>; 'last-call@ietf.org' <last-call@ietf.org<mailto:last-call@ietf.org>>; 'tls-chairs@ietf.org' <tls-chairs@ietf.org<mailto:tls-chairs@ietf.org>>; 'draft-ietf-tls-oldversions-deprecate@ietf.org' <draft-ietf-tls-oldversions-deprecate@ietf.org<mailto:draft-ietf-tls-oldversions-deprecate@ietf.org>>; 'tls@ietf.org' <tls@ietf.org<mailto:tls@ietf.org>>

Subject: Re: [Last-Call] [TLS] Last Call: <draft-ietf-tls-oldversions-deprecate-09.txt> (Deprecating TLSv1.0 and TLSv1.1) to Best Current Practice



Ow! Mike is my friend. Don't go dissing my friend!



I think the problem in communication we've just experienced is because Mike strayed away from Last Call discussion on a specific document, to asking/discussing a more general question of how IETF can better communicate with enterprises and perhaps even engage with enterprises to make it easier to operationalize protocols inside enterprise networks. I didn't see Mike suggesting any changes to the draft in Last Call, relevant to this question. ?



I'd like to suggest that maybe we could discuss this a little more on the ietf list? But not here.

I'll see what happens if I start a thread over there (ietf@ietf.org<mailto:ietf@ietf.org>) ...

Barbara



[Let me drum up my courage first. Thinking about posting to that list is much more stressful to me than, for example, thinking about bungie jumping off the Macau Tower -- an experience I highly recommend.]



> > Barbara,

> > Thanks.

> > And I think I was aware of all you state below regarding TLS, and

> > apologize

> for any related confusion regarding IPv6, even though, for the

> purposes of my comment, they are similar.

> >

> >

> > I don't disagree with anything you say on the TLS subject,  which is

> essentially that prior versions of TLS may be considered insecure,

> etc.  and should be deprecated.....

>

> Shouldn't we publish a document saying that? It seems this would

> represent consensus, even your view of the issue.

>

> >

> > My associated point is that Enterprises are generally not aware of

> > this and

> that it is not currently on our Planning or Budget Radars.

>

>

> TLS 1.2 has been around for how many years? All versions of OpenSSL

> without support have been EOL for some time. How many other CVE remain

> to be found in them? FIPS, PCI etc are all very clear that old TLS is

> going away. Browsers have supported TLS 1.2 for years. So has Windows.

> This depreciation should be easy given the extent of support for TLS

> 1.2.

>

> I bet that most services you run are already using TLS 1.2 or even 1.3

> because the client and server have been updated.

>

> > Further, this means we are potentially years from effectively and

> operationally addressing such issues.

>

> Let's be about it.

>

> >    And we must do so in conjunction with Partners, Clouds, Clients

> > and

> others.

> > And my general, overall point is that the answer to addressing the

> > above is

> to find way(s) of making Enterprises aware and possibly assisting with

> methods of addressing.     I think I also said this  problem is not unique to TLS

> or IPv6.      More, it is a lack of understanding of how things work within

> Enterprise Networks and the lack of Enterprise engagement in Standards

> Development processes.

> > And finally, this may not be a gap that the IETF should care about

> > or

> address, but someone should, IMHO.

>

> Your argument against the current text seems to be the following: we

> have a problem. It is inconvenient for me that you will ask me to deal

> with the problem. Therefore I would like the problem to not be

> acknowledged.

>

> Perhaps I am being too uncharitable. But I fail to see how softening

> the language eases depreciation, or what the consequence you fear

> happening are. You're free to continue ignoring the RFC series. But

> reality does not go away if it is ignored.

>

> Sincerely,

> Watson Ladd

>

> >

> > Thanks

> >

> > Mike

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