Re: [TLS] New draft for "next protocol"

David Holmes <d.holmes@f5.com> Mon, 16 May 2011 03:45 UTC

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From: David Holmes <d.holmes@f5.com>
To: Paul Hoffman <paul.hoffman@vpnc.org>, "tls@ietf.org" <tls@ietf.org>
Thread-Topic: [TLS] New draft for "next protocol"
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Date: Mon, 16 May 2011 03:45:51 +0000
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Subject: Re: [TLS] New draft for "next protocol"
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Very interesting!  I had assumed that the "next-protocol" extension was to inform the server (or proxy, or load-balancer) so that it could do better pre-loading, caching or optimizing.  I was surprised to see the extension described as a countermeasure for a cross-protocol attack.

Can you describe in more detail how the extension works against an attacker?  And let me apologize if this has already been discussed, I don't remember seeing it on the mailing list.