From owner-freebsd-net@FreeBSD.ORG Mon Apr 13 00:37:19 2015 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5D807AC3 for ; Mon, 13 Apr 2015 00:37:19 +0000 (UTC) Received: from gpo1.cc.swin.edu.au (gpo1.cc.swin.edu.au [136.186.1.30]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id CB64BE29 for ; Mon, 13 Apr 2015 00:37:18 +0000 (UTC) Received: from [136.186.229.37] (garmitage.caia.swin.edu.au [136.186.229.37]) by gpo1.cc.swin.edu.au (8.14.3/8.14.3) with ESMTP id t3D0b7vH021288 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 13 Apr 2015 10:37:08 +1000 Message-ID: <552B0FB3.8080105@swin.edu.au> Date: Mon, 13 Apr 2015 10:37:07 +1000 From: grenville armitage User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:16.0) Gecko/20121107 Thunderbird/16.0.2 MIME-Version: 1.0 To: freebsd-net@freebsd.org Subject: Re: Patch to reduce use of global IP ID value(s) to avoid leaking information References: <551F034A.3040402@selasky.org> <20150403213641.GM64665@glebius.int.ru> <551FA37B.90609@selasky.org> <35F9F267-EDB3-45FC-95E0-4573556BD736@freebsd.org> <551FF191.2090109@selasky.org> <55200A51.3090008@selasky.org> <20150405143335.J22893@sola.nimnet.asn.au> In-Reply-To: <20150405143335.J22893@sola.nimnet.asn.au> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Apr 2015 00:37:19 -0000 On 04/05/2015 14:39, Ian Smith wrote: > On Sat, 4 Apr 2015 18:11:55 +0100, Robert N. M. Watson wrote: > > On 4 Apr 2015, at 16:59, Hans Petter Selasky wrote: > > Thankyou Robert for this most interesting dissertation. > > And thanks Hans for the provocation to draw it forth .. > > cheers from the peanut gallery, Another peanut gallery contribution: for anyone who can reach behind IEEE paywalls, http://dx.doi.org/10.1109/COMST.2007.4317620 might be interesting reading -- "A survey of covert channels and countermeasures in computer network protocols", published in 2007. (I'm a lesser co-author of this one, so I may be overestimating the paper's utility ;) ) cheers, gja