IETF Logo Mail Archive

Re: [OPSEC] Reminder: Call for WG adoption of draft-sriram-opsec-urpf-improvements

Amir Herzberg <amir.lists@gmail.com> Wed, 18 April 2018 12:24 UTC

Return-Path: <amir.herzberg@gmail.com>
X-Original-To: opsec@ietfa.amsl.com
Delivered-To: opsec@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4D159127023; Wed, 18 Apr 2018 05:24:13 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.999
X-Spam-Level:
X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.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 j63XB3TuHKaZ; Wed, 18 Apr 2018 05:24:11 -0700 (PDT)
Received: from mail-io0-x230.google.com (mail-io0-x230.google.com [IPv6:2607:f8b0:4001:c06::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 D6C501277BB; Wed, 18 Apr 2018 05:24:10 -0700 (PDT)
Received: by mail-io0-x230.google.com with SMTP id l2-v6so685063iog.9; Wed, 18 Apr 2018 05:24:10 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=bBbbe7EiLuAt8IH3efVMXU8MUkZ1rlTEqwSdV3H/Q+U=; b=HDeU8kQENDNMcILLYS8xJ9MJCN21nLsQO8uTP3FSs9Rln1RIta60ORXEgXYJuFwyxg 3w6i0FHsFfdeVutNh5lVZCCv3y3b/uSbTIBYUyAu7Gd/3jC1DlLjJOe2KjhJEackJl7U d6ZL6jCCuzcaJzYINo4/AF2oQ7uhcSVfcN1tBujB6xR2uzXMQfKgdtNaILGFGPdGdooD f79HcS/895B7CfN/HMACTdCJnXFScN1biC4X2wmypw9IZwnfIFOP/85xXvaIqwvEtgA+ 9LgpM4vtX40JMK6li64mRbIrZuZgpItDYbyZpwMnzzwsO4ArXMOypxJ9yUtNLQSpHZAg TwTw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=bBbbe7EiLuAt8IH3efVMXU8MUkZ1rlTEqwSdV3H/Q+U=; b=ClaMVPlDjTZbxV+meuwwPNb1t6Ech4BVSWKpUiGhWXgh9Mf0RrMeIE7lbsAdNwbrMb QNrNhh3YR9e1Nu6W1dkOuslg1NMMlc+DZqJE5wsMFky+aJNfE7O++o+SuO9eesXPlnyL 16jH7VEe+kAVFr2URQt2q8KiJsz3fgyQPtSxhWsyAbOtEVhLUziwroQAAE2jxSeBSU5U mAnT7XRM+JS11giRkxVYHgO/Ii2L7w7RDVc6gtV3kcQdb+bb6umUzzdvQGbjr4oTsLmV 5VX5s3VNcaM6yTd3FHYGAoMGfTVe2dXJ5Ma2bTv4miJq4q/eWbyZ7GMdEoWX0bivrA+e 8kig==
X-Gm-Message-State: ALQs6tAmzRwPg8weB6tjM/hHBXUPTs/h6Zay6KOKc/WS3NqB2fhe0H1i FdTVfeurw7wgJW/7C0ZcxTGMx2QODEjJmL27bDE=
X-Google-Smtp-Source: AB8JxZoL5zABc5aIB4VVBkdOfWASHjb6DtKIEOjTiHMAU5NuYfpVjVEcb0dgdTjlAqdYcvTgYJStR4mfYfXAj5gavG0=
X-Received: by 2002:a6b:81d3:: with SMTP id l80-v6mr1695572ioi.118.1524054249987; Wed, 18 Apr 2018 05:24:09 -0700 (PDT)
MIME-Version: 1.0
References: <62EC3E74-6837-4E22-B9C8-FD738316DED6@cisco.com> <SN6PR05MB4240AA845A5245E08E49CACAAEB70@SN6PR05MB4240.namprd05.prod.outlook.com> <A976E7E7-327B-4B30-B975-D92F6B2309B9@senki.org> <209728A1-B747-4B59-AB0F-F21669B67E6C@juniper.net> <B153D7AF-3F8D-4BFE-9A8C-1361AB8A2731@senki.org> <20180418083010.GE89741@Space.Net> <BYAPR09MB27738C811ECFB524F41CB08B84B60@BYAPR09MB2773.namprd09.prod.outlook.com>
In-Reply-To: <BYAPR09MB27738C811ECFB524F41CB08B84B60@BYAPR09MB2773.namprd09.prod.outlook.com>
From: Amir Herzberg <amir.lists@gmail.com>
Date: Wed, 18 Apr 2018 12:23:58 +0000
Message-ID: <CAHBw0M-9cSGcA+LwmNzms=4iV004v1JwTz=SGoUFzUw1mCC+bw@mail.gmail.com>
To: "Sriram, Kotikalapudi (Fed)" <kotikalapudi.sriram@nist.gov>
Cc: Jeff Haas <jhaas@juniper.net>, "Montgomery, Douglas (Fed)" <dougm@nist.gov>, "opsec-chairs@ietf.org" <opsec-chairs@ietf.org>, "opsec@ietf.org" <opsec@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000003066f3056a1e8848"
Archived-At: <https://mailarchive.ietf.org/arch/msg/opsec/XChRDYNURA0SSWOZdzFnrTO2ObI>
Subject: Re: [OPSEC] Reminder: Call for WG adoption of draft-sriram-opsec-urpf-improvements
X-BeenThere: opsec@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: opsec wg mailing list <opsec.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/opsec>, <mailto:opsec-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/opsec/>
List-Post: <mailto:opsec@ietf.org>
List-Help: <mailto:opsec-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/opsec>, <mailto:opsec-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 18 Apr 2018 12:24:13 -0000

Yes, I agree.

On Wed, Apr 18, 2018 at 8:20 AM Sriram, Kotikalapudi (Fed) <
kotikalapudi.sriram@nist.gov> wrote:

> Amir,
>
> >I support the adoption of "draft-sriram-opsec-urpf-improvements" as an
> >OPSEC Working Group document.
>
> Thank you.
>
> >
> >Let me mention that I think the WG should also consider potential use of
> >RPKI as a complementary mechanism to improve uRPF. Namely, if there is an
> >ROA for the prefix-origin pair, it should be allowed (even if the
> >(enhanced/preferred)uRPF check fails. In a future (fantasy?) where RPKI is
>
> I agree with you here. When you say, "if there is an
> ROA for the prefix-origin pair, it should be allowed", I think you mean
> ROA for prefix-origin pair with origin AS in the ISP's customer cone.
> What you propose can be done even in partial deployment of RPKI,
> of course not stand alone but for augmenting the RPF lists
> constructed with the methods proposed in the draft.
> It helps to add completeness and/or perform additional sanity checks for
> the RPF filters.
> Of course, the benefit of doing this (as a complementary mechanism)
> gets increasing better as the RPKI deployment grows.
>
> Sriram
>
> >widely deployed, this solution may have even been better. I'm aware that
> >this is, unfortuately, far cry from current situation, hence I definitely
> >support moving forward with this draft. My comment can be discussed as
> part
> >of this or separately (or not at all).
> >
> >thanks, Amir
> >
> >
>
-- 
-- 
Amir Herzberg
Associate Professor, Dept. of Computer Science, Bar Ilan University

http://www.cs.biu.ac.il/~herzbea

v2.23.0 | Report a Bug | By Email