Re: [Spud] [Privsec-program] Detecting and Defeating TCP/IP Hypercookie Attacks

Eliot Lear <lear@cisco.com> Mon, 01 August 2016 22:02 UTC

Return-Path: <lear@cisco.com>
X-Original-To: spud@ietfa.amsl.com
Delivered-To: spud@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 17F5012D927 for <spud@ietfa.amsl.com>; Mon, 1 Aug 2016 15:02:56 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -15.809
X-Spam-Level:
X-Spam-Status: No, score=-15.809 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-1.287, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NwhlB-iyW8ps for <spud@ietfa.amsl.com>; Mon, 1 Aug 2016 15:02:55 -0700 (PDT)
Received: from aer-iport-1.cisco.com (aer-iport-1.cisco.com [173.38.203.51]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9169612D91A for <spud@ietf.org>; Mon, 1 Aug 2016 15:02:54 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3454; q=dns/txt; s=iport; t=1470088974; x=1471298574; h=subject:to:references:cc:from:message-id:date: mime-version:in-reply-to; bh=9i7/yw4PvILQv37X6oG+jtMb/m+OloutYYkbQWht21w=; b=iE5KfjfpSMieCNBpHfN5RPnMntOUTY24Y8esaaIif/vxkZsBPMTjXErX 2Ajn/x6KjrnoAK2nrzVflt5czFxs0B3xwfNDdua1y16zno0Au62S4d0aN Kd80Mq6ru1RWNkLR0cCqSQUVCBDv9mCGb/Id/XCycn8QqRXKnaM3j/JeN w=;
X-Files: signature.asc : 481
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0D1CgAwxp9X/xbLJq1dhEW7YoYdAoFtE?= =?us-ascii?q?AEBAQEBAQFdJ4RfAQUjVhALGCoCAlcGAQwIAQGILbBnkAQBAQEBAQEBAQEBAQE?= =?us-ascii?q?BAQEBAQERDogiglWHQYJaAQSZM4M6gXCJVYFVAYd9hWyQJzUfg3w6iB4BAQE?=
X-IronPort-AV: E=Sophos;i="5.28,457,1464652800"; d="asc'?scan'208";a="680479898"
Received: from aer-iport-nat.cisco.com (HELO aer-core-2.cisco.com) ([173.38.203.22]) by aer-iport-1.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Aug 2016 22:02:52 +0000
Received: from [10.61.168.28] ([10.61.168.28]) by aer-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id u71M2pO5005363; Mon, 1 Aug 2016 22:02:52 GMT
To: Tom Herbert <tom@herbertland.com>, Christian Huitema <huitema@microsoft.com>
References: <409B6F52-B637-4333-915B-A8127C80C98B@trammell.ch> <1b261e1e-a543-53df-8a2a-7dddae415a14@cs.tcd.ie> <D2CEDF13-E508-4732-B8F6-98FBBDDC7EE6@tik.ee.ethz.ch> <CALx6S34gVFDJ6mV=GVrfK5doTK2BbRRWXvxeqFUtidfPp5XGKg@mail.gmail.com> <5717b856-eaf9-4142-72fa-7e58b4cd61a5@artdecode.de> <CALx6S36zv4=S8tgRNqwee0j973Y_gJ7RBnnnV+0vBq_4kn7PVw@mail.gmail.com> <aa2afa2c-23d0-bf50-a82e-654fd08f373a@cisco.com> <CALx6S375si8km=8NhMfgWAtqE09Xju3CH1k3ktuae6gi8XT5ww@mail.gmail.com> <a2426583-22d7-85a1-e7a5-791c755f9209@cisco.com> <CALx6S37Ni=qA-BcnNQepRwe3ZC48RNmirRVjCe1fv2bT3gQnWw@mail.gmail.com> <CAKKJt-d02CmE7cW59s=A68SL=EQVTEVYOBzP74bnVXsEmfsY=A@mail.gmail.com> <CALx6S36paAxPP317aDGybkrPWtJ9L+ZuTYOHTQ11ejwUgJ7vFg@mail.gmail.com> <CAKKJt-efM3k5jL6EJmMP-t69SGNUyDxPu_xurvnGNtLSFZ87VQ@mail.gmail.com> <BN6PR03MB26752FBA8655DA802A769450A8040@BN6PR03MB2675.namprd03.prod.outlook.com> <CALx6S34oC+OZuMpdzJ49f8Ew0qEnMOxxKX=mqDsausEsbWt0Ug@mail.gmail.com>
From: Eliot Lear <lear@cisco.com>
Message-ID: <1351f583-93b4-b81f-b661-4fe61dd7a803@cisco.com>
Date: Tue, 2 Aug 2016 00:02:55 +0200
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:45.0) Gecko/20100101 Thunderbird/45.2.0
MIME-Version: 1.0
In-Reply-To: <CALx6S34oC+OZuMpdzJ49f8Ew0qEnMOxxKX=mqDsausEsbWt0Ug@mail.gmail.com>
Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="E7lAuRoGM4w1iepx1TSUEQ6QJScoVl0nr"
Archived-At: <https://mailarchive.ietf.org/arch/msg/spud/lO0FsKjY6ARZiGKMnZLxdagG5Cw>
Cc: spud <spud@ietf.org>, =?UTF-8?Q?Mirja_K=c3=bchlewind?= <mirja.kuehlewind@tik.ee.ethz.ch>, Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>, Brian Trammell <ietf@trammell.ch>, Stephan Neuhaus <sten@artdecode.de>, Stephen Farrell <stephen.farrell@cs.tcd.ie>
Subject: Re: [Spud] [Privsec-program] Detecting and Defeating TCP/IP Hypercookie Attacks
X-BeenThere: spud@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Session Protocol Underneath Datagrams <spud.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/spud>, <mailto:spud-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/spud/>
List-Post: <mailto:spud@ietf.org>
List-Help: <mailto:spud-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/spud>, <mailto:spud-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 01 Aug 2016 22:02:56 -0000


On 8/1/16 10:52 PM, Tom Herbert wrote:
> The question is also whether we need to send an explicit "end
> connection" signal. Network devices want this to know when to free
> their connection tracking state, but in a multipath Internet I don't
> readily how this would be a useful signal either.
>

Look at that as an optimization.  We always have to handle the case
where the device drops dead or a process dies.

Eliot