Re: [secdir] Routing loop attacks using IPv6 tunnels

"Templin, Fred L" <Fred.L.Templin@boeing.com> Fri, 28 August 2009 20:43 UTC

Return-Path: <Fred.L.Templin@boeing.com>
X-Original-To: secdir@core3.amsl.com
Delivered-To: secdir@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 6A3C93A6BF1; Fri, 28 Aug 2009 13:43:41 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.603
X-Spam-Level:
X-Spam-Status: No, score=-5.603 tagged_above=-999 required=5 tests=[AWL=0.396, BAYES_00=-2.599, J_CHICKENPOX_13=0.6, RCVD_IN_DNSWL_MED=-4]
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 VS0A5VEhNPbq; Fri, 28 Aug 2009 13:43:40 -0700 (PDT)
Received: from slb-smtpout-01.boeing.com (slb-smtpout-01.boeing.com [130.76.64.48]) by core3.amsl.com (Postfix) with ESMTP id 0DC0228C2EF; Fri, 28 Aug 2009 13:43:30 -0700 (PDT)
Received: from slb-av-01.boeing.com (slb-av-01.boeing.com [129.172.13.4]) by slb-smtpout-01.ns.cs.boeing.com (8.14.0/8.14.0/8.14.0/SMTPOUT) with ESMTP id n7SKPRiU028364 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 28 Aug 2009 13:25:27 -0700 (PDT)
Received: from slb-av-01.boeing.com (localhost [127.0.0.1]) by slb-av-01.boeing.com (8.14.0/8.14.0/DOWNSTREAM_RELAY) with ESMTP id n7SKPQuS008869; Fri, 28 Aug 2009 13:25:27 -0700 (PDT)
Received: from XCH-NWBH-11.nw.nos.boeing.com (xch-nwbh-11.nw.nos.boeing.com [130.247.55.84]) by slb-av-01.boeing.com (8.14.0/8.14.0/UPSTREAM_RELAY) with ESMTP id n7SKPLGl008655; Fri, 28 Aug 2009 13:25:26 -0700 (PDT)
Received: from XCH-NW-7V2.nw.nos.boeing.com ([130.247.54.35]) by XCH-NWBH-11.nw.nos.boeing.com with Microsoft SMTPSVC(6.0.3790.3959); Fri, 28 Aug 2009 13:25:26 -0700
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: quoted-printable
Date: Fri, 28 Aug 2009 13:25:23 -0700
Message-ID: <39C363776A4E8C4A94691D2BD9D1C9A106555B3D@XCH-NW-7V2.nw.nos.boeing.com>
In-Reply-To: <212591.98462.qm@web45502.mail.sp1.yahoo.com>
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Thread-Topic: Routing loop attacks using IPv6 tunnels
Thread-Index: AcooErw/GQXNMWvASRqGPthARajqOQACrWeA
References: <475898.88672.qm@web45510.mail.sp1.yahoo.com><39C363776A4E8C4A94691D2BD9D1C9A106514554@XCH-NW-7V2.nw.nos.boeing.com> <39C363776A4E8C4A94691D2BD9D1C9A1065145AE@XCH-NW-7V2.nw.nos.boeing.com> <39C363776A4E8C4A94691D2BD9D1C9A106555996@XCH-NW-7V2.nw.nos.boeing.com> <212591.98462.qm@web45502.mail.sp1.yahoo.com>
From: "Templin, Fred L" <Fred.L.Templin@boeing.com>
To: Gabi Nakibly <gnakibly@yahoo.com>, v6ops <v6ops@ops.ietf.org>
X-OriginalArrivalTime: 28 Aug 2009 20:25:26.0120 (UTC) FILETIME=[AD5D0E80:01CA281D]
Cc: ipv6@ietf.org, secdir@ietf.org
Subject: Re: [secdir] Routing loop attacks using IPv6 tunnels
X-BeenThere: secdir@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: Security Area Directorate <secdir.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/secdir>, <mailto:secdir-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/secdir>
List-Post: <mailto:secdir@ietf.org>
List-Help: <mailto:secdir-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/secdir>, <mailto:secdir-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 28 Aug 2009 20:43:41 -0000

Gabi,

> -----Original Message-----
> From: Gabi Nakibly [mailto:gnakibly@yahoo.com]
> Sent: Friday, August 28, 2009 12:07 PM
> To: Templin, Fred L; v6ops
> Cc: ipv6@ietf.org; secdir@ietf.org
> Subject: Re: Routing loop attacks using IPv6 tunnels
> 
> Correct. All the attacks rely on the fact that the ISATAP router
encapsulates/decapsulates a packet
> the 6to4 relay decapsulates/encapsulates, respectively. So the two
tunnels must have the same
> encapsulation type.

OK. That will greatly simplify the checks needed for new
automatic tunneling protocols that have a format other
than ip-proto-41.

Fred
fred.l.templin@boeing.com

> ----- Original Message ----
> > From: "Templin, Fred L" <Fred.L.Templin@boeing.com>
> > To: Gabi Nakibly <gnakibly@yahoo.com>; v6ops <v6ops@ops.ietf.org>
> > Cc: ipv6@ietf.org; secdir@ietf.org
> > Sent: Friday, August 28, 2009 7:23:03 PM
> > Subject: RE: Routing loop attacks using IPv6 tunnels
> >
> > Gabi,
> >
> > Correct me if I am wrong, but if there were a new version
> > of ISATAP that did not use ip-proto-41 encapsulation but
> > instead used a different kind of encapsulation, then it
> > need not concern itself with routing loop interactions
> > with 6to4 relays since 6to4 relays only know about
> > ip-proto-41. Does that match your understanding?
> >
> > Thanks - Fred
> > fred.l.templin@boeing.com
> 
> 
> 
>