Re: [trill] Stephen Farrell's Discuss on draft-ietf-trill-pseudonode-nickname-06: (with DISCUSS)

Donald Eastlake <d3e3e3@gmail.com> Sat, 26 September 2015 22:31 UTC

Return-Path: <d3e3e3@gmail.com>
X-Original-To: trill@ietfa.amsl.com
Delivered-To: trill@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D1F931A8799; Sat, 26 Sep 2015 15:31:45 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: 0.95
X-Spam-Level:
X-Spam-Status: No, score=0.95 tagged_above=-999 required=5 tests=[BAYES_50=0.8, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=no
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 QfI5QvNEtWmm; Sat, 26 Sep 2015 15:31:44 -0700 (PDT)
Received: from mail-ob0-x230.google.com (mail-ob0-x230.google.com [IPv6:2607:f8b0:4003:c01::230]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 47E481A8797; Sat, 26 Sep 2015 15:31:44 -0700 (PDT)
Received: by obbda8 with SMTP id da8so105035105obb.1; Sat, 26 Sep 2015 15:31:43 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=EhSyeyeeJ3edVYYYgfwZyKgxLmKuDzFazNFVpApT5RY=; b=FEhrXmTGjQnF6yDrLykE5Of1aA45N7/m0BD/0pG8sCO7wv/ZjQDIlX6+ZaIEfDf0H2 dVbe5n21jNxNvr1STF2zH/Wjqun41775mJ+dScTNBM0jwxUOVA+JYsml0p0YzNpOFuN8 H2evN07oKWC1v2ql0ZV/KnWrytzZcP3XpeG4PU1ySmOVar9OsMklnnwq63Bv+FJFxe8r j0CYGTIS+OO+0NzIAPXIQchMMYGM7qhNF/HO6ZFSg32jvnoj69wHNmflBhQ2P/rmEL3r SetZ/4z+1RDlC0B26Gpd+ZH6yuqjPC59qQ5GCaieka+mwqvXWP9LKooeAMmHOATMHy4S xrsA==
X-Received: by 10.182.133.9 with SMTP id oy9mr6586551obb.41.1443306703687; Sat, 26 Sep 2015 15:31:43 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.76.144.65 with HTTP; Sat, 26 Sep 2015 15:31:29 -0700 (PDT)
In-Reply-To: <56045CA4.8090600@cs.tcd.ie>
References: <20150917103447.13065.86001.idtracker@ietfa.amsl.com> <CAF4+nEFEJj8NyuMA2M_f0cGQLUFuYSOKg8jrYRWtzicZFSNqUA@mail.gmail.com> <CAF4+nEEzG1GcYEdMj9bhS50JAsQ=LAE=qT3YnCNa-3NBdXr0eg@mail.gmail.com> <5603D746.5000803@cs.tcd.ie> <CAF4+nEH3Rs2w1MstJCVqc0c=tGZCncan-9pb3kiVd_qO5TGG9A@mail.gmail.com> <56045CA4.8090600@cs.tcd.ie>
From: Donald Eastlake <d3e3e3@gmail.com>
Date: Sat, 26 Sep 2015 18:31:29 -0400
Message-ID: <CAF4+nEEkdZ-Vk65C0FT1UcvNM_-DwF229nyExwE60EZ-q52qYg@mail.gmail.com>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
Content-Type: text/plain; charset=UTF-8
Archived-At: <http://mailarchive.ietf.org/arch/msg/trill/oXqMgSXrfhtaMTrlbYWtyjTKhd4>
Cc: draft-ietf-trill-pseudonode-nickname.ad@ietf.org, draft-ietf-trill-pseudonode-nickname@ietf.org, "trill-chairs@ietf.org" <trill-chairs@ietf.org>, The IESG <iesg@ietf.org>, "trill@ietf.org" <trill@ietf.org>
Subject: Re: [trill] Stephen Farrell's Discuss on draft-ietf-trill-pseudonode-nickname-06: (with DISCUSS)
X-BeenThere: trill@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "Developing a hybrid router/bridge." <trill.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/trill>, <mailto:trill-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/trill/>
List-Post: <mailto:trill@ietf.org>
List-Help: <mailto:trill-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/trill>, <mailto:trill-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 26 Sep 2015 22:31:46 -0000

Hi Stephen,

On Thu, Sep 24, 2015 at 4:27 PM, Stephen Farrell
<stephen.farrell@cs.tcd.ie> wrote:
>
>
> On 24/09/15 21:26, Donald Eastlake wrote:
>> Hi Stephen,
>>
>> On Thu, Sep 24, 2015 at 6:58 AM, Stephen Farrell
>> <stephen.farrell@cs.tcd.ie> wrote:
>>>
>>> Hi Don,
>>>
>>> Yes, that'd do the job. If there were any sensible pointers
>>> to the kind of proprietary things folks do (e.g. in some
>>> workshop paper or product documentation) then that might be
>>> useful, but I can imagine there might not be.
>>
>> I'm not aware of such write-ups.
>
> Fair enough, wasn't meant as a blocking comment anyway, so
> I'm fine to clear with your suggested change.

draft-ietf-trill-pseudonode-nickname-07.txt has been uploaded with
this change in it. So, unless you have further comments, we'd
appreciate it if you cleared you DISCUSS.

Thanks,
Donald
=============================
 Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
 155 Beaver Street, Milford, MA 01757 USA
 d3e3e3@gmail.com

> S
> g
>
>>
>> Thanks,
>> Donald
>> =============================
>>  Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
>>  155 Beaver Street, Milford, MA 01757 USA
>>  d3e3e3@gmail.com
>>
>>> Thanks,
>>> S.
>>>
>>> On 24/09/15 04:46, Donald Eastlake wrote:
>>>> Hi Stephen,
>>>>
>>>> Would the following change resolve your DISCUSS?
>>>>
>>>> OLD
>>>>    This draft does not introduce any extra security risks. For general
>>>>    TRILL Security Considerations, see [RFC6325].
>>>>
>>>> NEW
>>>>    Since currently deployed LAALPs [RFC7379] are proprietary, security
>>>>    over membership in and internal management of active-active edge
>>>>    groups is proprietary. A rogue RBridge that insinuates itself into
>>>>    an active-active edge group can disrupt end station traffic flowing
>>>>    into or out of that group. For example, if there are N RBridges in
>>>>    the group, it could typically control 1/Nth of the traffic flowing
>>>>    out of that group and a similar amount of unicast traffic flowing
>>>>    into that group.  For multi-destination traffice flowing into that
>>>>    group, it could control all that was in a VLAN for which it was DF
>>>>    and it can exercise substantial control over the DF election by
>>>>    changing its own System ID.
>>>>
>>>>    For general TRILL Security Considerations, see [RFC6325].
>>>>
>>>>
>>>> Thanks,
>>>> Donald
>>>> =============================
>>>>  Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
>>>>  155 Beaver Street, Milford, MA 01757 USA
>>>>  d3e3e3@gmail.com
>>>>
>>>>
>>>> On Thu, Sep 17, 2015 at 9:49 AM, Donald Eastlake <d3e3e3@gmail.com> wrote:
>>>>> Hi Stephen,
>>>>>
>>>>> On Thu, Sep 17, 2015 at 6:34 AM, Stephen Farrell
>>>>> <stephen.farrell@cs.tcd.ie> wrote:
>>>>>> Stephen Farrell has entered the following ballot position for
>>>>>> draft-ietf-trill-pseudonode-nickname-06: Discuss
>>>>>>
>>>>>> ...
>>>>>>
>>>>>> The document, along with other ballot positions, can be found here:
>>>>>> https://datatracker.ietf.org/doc/draft-ietf-trill-pseudonode-nickname/
>>>>>>
>>>>>>
>>>>>>
>>>>>> ----------------------------------------------------------------------
>>>>>> DISCUSS:
>>>>>> ----------------------------------------------------------------------
>>>>>>
>>>>>>
>>>>>> I have two questions where it's not clear to me if this
>>>>>> specification does or does not introduce new vulnerabilities.
>>>>>> It could well be that it does not and these are handled
>>>>>> elsewhere, but I'm not sure so...
>>>>>>
>>>>>> (1) How is authorization for being a member of an RBv handled?
>>>>>
>>>>> Currently I think that this is out of scope because the active-active
>>>>> edge groups, each of which is represented by an RBv, are proprietary
>>>>> MC-LAG implementations with proprietary management. (See bottom of
>>>>> page 5 of RFC 7379. This draft is standardizing a TRILL campus facing
>>>>> interface for an AAE group.)
>>>>>
>>>>>> (2) If a rogue RB can add itself to an RBv can it arrange
>>>>>> things so the rogue RB becomes the DF for the RBv?  (If so,
>>>>>> that would seem to create new DoS opportunities at least.)
>>>>>
>>>>> I don't see any problem in mentioning this in the Security Considerations.
>>>>>
>>>>> Thanks,
>>>>> Donald
>>>>> =============================
>>>>>  Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
>>>>>  155 Beaver Street, Milford, MA 01757 USA
>>>>>  d3e3e3@gmail.com
>>