Re: [TLS] TLS@IETF101 Agenda Posted

Ted Lemon <mellon@fugue.com> Tue, 13 March 2018 22:40 UTC

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From: Ted Lemon <mellon@fugue.com>
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Date: Tue, 13 Mar 2018 18:40:45 -0400
In-Reply-To: <C1970611-C781-41A8-87CA-D00629AC41E7@vigilsec.com>
Cc: IETF TLS <tls@ietf.org>
To: Russ Housley <housley@vigilsec.com>
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Subject: Re: [TLS] TLS@IETF101 Agenda Posted
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On Mar 13, 2018, at 6:16 PM, Russ Housley <housley@vigilsec.com>; wrote:
> This is a bogus argument.

I'm pretty sure there's a Monty Python skit about this, so I won't belabor the point.

> First, staying with an old protocol version often leads to locking in unmaintained versions of old software.

Right, that's one of the stated goals of this work: to be able to continue to use software that the operator can't upgrade.

> Second, using TLS1.2 does not technically address the issue.  If the client were to exclusively offer DHE-based ciphersuites, then the visibility techniques that have been used in the past are thwarted.

The client in this case is under the control of the operator, so this is a non-issue.