IETF Logo Mail Archive

Re: [CGA-EXT] Review of draft-ietf-csi-proxy-send

"Laganier, Julien" <julienl@qualcomm.com> Thu, 04 March 2010 16:12 UTC

Return-Path: <julienl@qualcomm.com>
X-Original-To: cga-ext@core3.amsl.com
Delivered-To: cga-ext@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 5ABC828C1FB for <cga-ext@core3.amsl.com>; Thu, 4 Mar 2010 08:12:31 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -106.599
X-Spam-Level:
X-Spam-Status: No, score=-106.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tiSzgpu6QHW7 for <cga-ext@core3.amsl.com>; Thu, 4 Mar 2010 08:12:26 -0800 (PST)
Received: from wolverine02.qualcomm.com (wolverine02.qualcomm.com [199.106.114.251]) by core3.amsl.com (Postfix) with ESMTP id AA89B28C1F1 for <cga-ext@ietf.org>; Thu, 4 Mar 2010 08:12:25 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qualcomm.com; i=julienl@qualcomm.com; q=dns/txt; s=qcdkim; t=1267719148; x=1299255148; h=from:to:date:subject:thread-topic:thread-index: message-id:references:in-reply-to:accept-language: content-language:x-ms-has-attach:x-ms-tnef-correlator: acceptlanguage:content-type:content-transfer-encoding: mime-version; z=From:=20"Laganier,=20Julien"=20<julienl@qualcomm.com> |To:=20Jari=20Arkko=20<jari.arkko@piuha.net>,=0D=0A=09"dr aft-ietf-csi-proxy-send@tools.ietf.org"=0D=0A=09<draft-ie tf-csi-proxy-send@tools.ietf.org>,=20"cga-ext@ietf.org" =0D=0A=09<cga-ext@ietf.org>|Date:=20Thu,=204=20Mar=202010 =2008:12:21=20-0800|Subject:=20RE:=20[CGA-EXT]=20Review =20of=20draft-ietf-csi-proxy-send|Thread-Topic:=20[CGA-EX T]=20Review=20of=20draft-ietf-csi-proxy-send |Thread-Index:=20Acp5qjL+dmn4LqQQTwan7HKr/TtNMBCCgWbg |Message-ID:=20<BF345F63074F8040B58C00A186FCA57F1C6A8C417 0@NALASEXMB04.na.qualcomm.com>|References:=20<alpine.LNX. 2.00.0911191100150.7833@whitebox>=0D=0A=09<BF345F63074F80 40B58C00A186FCA57F1C66087842@NALASEXMB04.na.qualcomm.com> =0D=0A=09<alpine.LNX.2.00.0911201144010.7546@whitebox>=0D =0A=09<BF345F63074F8040B58C00A186FCA57F1C65FB277D@NALASEX MB04.na.qualcomm.com>=0D=0A=09<alpine.LNX.2.00.0911211025 090.11248@localhost.localdomain>=0D=0A=09<BF345F63074F804 0B58C00A186FCA57F1C65FB2942@NALASEXMB04.na.qualcomm.com> =0D=0A=09<alpine.LNX.2.00.0911242317130.11124@localhost.l ocaldomain>=0D=0A=09<BF345F63074F8040B58C00A186FCA57F1C65 FB2A51@NALASEXMB04.na.qualcomm.com>=0D=0A=09<alpine.LNX.2 .00.0911260951580.7596@whitebox>=0D=0A=09<37915D90-B246-4 8E4-9C7B-69DAF54FA43A@lacnic.net>=0D=0A=20<4B210E23.40009 08@piuha.net>|In-Reply-To:=20<4B210E23.4000908@piuha.net> |Accept-Language:=20en-US|Content-Language:=20en-US |X-MS-Has-Attach:|X-MS-TNEF-Correlator:|acceptlanguage: =20en-US|Content-Type:=20text/plain=3B=20charset=3D"us-as cii"|Content-Transfer-Encoding:=20quoted-printable |MIME-Version:=201.0; bh=FWQBlXnU1PH1+bR2PWoX/PRmP5l0nMdJKKFsL8VTUwI=; b=EKnBiW/I8H+IKCJ+bUO1I8grd4Dg0GXzXkGyUMduvE5ZF2g8RpKjzHqJ ir02xebGtVh5cb/ZQBbxO1TFKL8WT63vdeypEYci5cjAive9+/jrYJQHa i4ynKzBYDhm+9FfdS7LpkNmVRQ4OKgSf5WHgtVDHVq2PXpn3iRVn5zqdB o=;
X-IronPort-AV: E=McAfee;i="5400,1158,5909"; a="35552285"
Received: from ironstorm.qualcomm.com ([172.30.39.153]) by wolverine02.qualcomm.com with ESMTP; 04 Mar 2010 08:12:27 -0800
X-IronPort-AV: E=Sophos;i="4.49,581,1262592000"; d="scan'208";a="49561009"
Received: from nasanexhub04.qualcomm.com (HELO nasanexhub04.na.qualcomm.com) ([129.46.134.222]) by ironstorm.qualcomm.com with ESMTP/TLS/RC4-MD5; 04 Mar 2010 08:12:27 -0800
Received: from nalasexhc03.na.qualcomm.com (10.47.129.194) by nasanexhub04.na.qualcomm.com (129.46.134.222) with Microsoft SMTP Server (TLS) id 8.2.234.1; Thu, 4 Mar 2010 08:12:23 -0800
Received: from NALASEXMB04.na.qualcomm.com ([10.47.7.114]) by nalasexhc03.na.qualcomm.com ([10.47.129.194]) with mapi; Thu, 4 Mar 2010 08:12:22 -0800
From: "Laganier, Julien" <julienl@qualcomm.com>
To: Jari Arkko <jari.arkko@piuha.net>, "draft-ietf-csi-proxy-send@tools.ietf.org" <draft-ietf-csi-proxy-send@tools.ietf.org>, "cga-ext@ietf.org" <cga-ext@ietf.org>
Date: Thu, 4 Mar 2010 08:12:21 -0800
Thread-Topic: [CGA-EXT] Review of draft-ietf-csi-proxy-send
Thread-Index: Acp5qjL+dmn4LqQQTwan7HKr/TtNMBCCgWbg
Message-ID: <BF345F63074F8040B58C00A186FCA57F1C6A8C4170@NALASEXMB04.na.qualcomm.com>
References: <alpine.LNX.2.00.0911191100150.7833@whitebox> <BF345F63074F8040B58C00A186FCA57F1C66087842@NALASEXMB04.na.qualcomm.com> <alpine.LNX.2.00.0911201144010.7546@whitebox> <BF345F63074F8040B58C00A186FCA57F1C65FB277D@NALASEXMB04.na.qualcomm.com> <alpine.LNX.2.00.0911211025090.11248@localhost.localdomain> <BF345F63074F8040B58C00A186FCA57F1C65FB2942@NALASEXMB04.na.qualcomm.com> <alpine.LNX.2.00.0911242317130.11124@localhost.localdomain> <BF345F63074F8040B58C00A186FCA57F1C65FB2A51@NALASEXMB04.na.qualcomm.com> <alpine.LNX.2.00.0911260951580.7596@whitebox> <37915D90-B246-48E4-9C7B-69DAF54FA43A@lacnic.net> <4B210E23.4000908@piuha.net>
In-Reply-To: <4B210E23.4000908@piuha.net>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Subject: Re: [CGA-EXT] Review of draft-ietf-csi-proxy-send
X-BeenThere: cga-ext@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: CGA and SeND Extensions <cga-ext.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/cga-ext>, <mailto:cga-ext-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/cga-ext>
List-Post: <mailto:cga-ext@ietf.org>
List-Help: <mailto:cga-ext-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/cga-ext>, <mailto:cga-ext-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 04 Mar 2010 16:12:31 -0000

Jari,

> [...]
> 
> >
> >   Sharing the same link-local address on different MAGs would
> >   require all MAGs of a PMIPv6 domain to construct the CGA and the
> >   RSA Signature option with the same public-private key pair, which
> >   is not acceptable from a security point of view.
> >
> 
> AFAIK there is no requirement that routers construct CGAs.

If the router does not construct a CGA it will not be able to send secure Neighbor Advertisement messages for its own address, as per RFC3971: 

   Neighbor Solicitation and Advertisement messages without the CGA
   option MUST be treated as unsecured

Since the router does need to send Neighbor Advertisements for its own address whenever a host on the link initiates Neighbor Unreachability Detection, it seems to me that there is indeed a requirement that a router constructs a CGA as per RFC3971. I am missing something?

--julien

v2.3.2 | Report a Bug | By Email