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Re: [OPSAWG] [TLS] CALL FOR ADOPTION: draft-reddy-opsawg-mud-tls

Eliot Lear <lear@cisco.com> Wed, 23 September 2020 10:29 UTC

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From: Eliot Lear <lear@cisco.com>
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Date: Wed, 23 Sep 2020 12:29:24 +0200
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Cc: Ben Schwartz <bemasc@google.com>, opsawg <opsawg@ietf.org>, "<tls@ietf.org>" <tls@ietf.org>
To: tirumal reddy <kondtir@gmail.com>
References: <21BA8D05-DD83-44DE-81B9-457692484CAD@cisco.com> <053b286e-4780-1818-a79d-71b9c967bbd2@sandelman.ca> <CAHbrMsANEA4omTm5dPYLN9zGde2YdT_71ujpBcCEer_xSkPhbw@mail.gmail.com> <CAFpG3gepojPJoK8W+o9Qr66gPSUqHY+sDX-v+-fuwcM9Y56C_g@mail.gmail.com> <20200911114054.184988dc@totoro.tlrmx.org> <FF4995F8-53F1-450B-A305-A095A7BAE057@cisco.com> <CAFpG3gcS951QfTZb+qFstjnBxfxP54B=VDSSPP3xyP3dtuabQg@mail.gmail.com> <CAHbrMsD5qj2ovcUVMRYStXN01RiX2RiJ+N8cakeGPH3wU2nqBQ@mail.gmail.com> <CAFpG3gd9OTZexW9_XCmeO-2uBc8OcVx5HJzs1Qq-zR8zAbnmGg@mail.gmail.com>
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Subject: Re: [OPSAWG] [TLS] CALL FOR ADOPTION: draft-reddy-opsawg-mud-tls
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Tiru

> On 23 Sep 2020, at 11:50, tirumal reddy <kondtir@gmail.com> wrote:
> 
> Hi Ben,
> 
> Please see inline 
> 
> On Tue, 22 Sep 2020 at 20:45, Ben Schwartz <bemasc@google.com <mailto:bemasc@google.com>> wrote:
> I'm not able to understand the new text in Section 6.  Are you saying that clients MUST include all the listed extensions/features, but MAY also include extensions/features not listed in the MUD profile?  So the MUD profile only acts as a "minimum" set of features?
> 
> Section 6 discusses the firewall behaviour when it sees a) known extensions/features in a TLS session but not specified in the MUD profile b) unknown extensions/features in a TLS session either specified or not specified in the MUD profile c) updated MUD profile specifying extensions/features  not supported by the firewall.
> 

I think it would be good to step through a couple of example extensions that could be viewed both separately and together, and what the order of operations would look like in each case.

Eliot

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