Re: [DNSOP] Fwd: New Version Notification for draft-ogud-dnsop-any-notimp-00.txt

Paul Vixie <paul@redbarn.org> Fri, 06 March 2015 19:14 UTC

Return-Path: <paul@redbarn.org>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6BD8F1A0074 for <dnsop@ietfa.amsl.com>; Fri, 6 Mar 2015 11:14:25 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.909
X-Spam-Level:
X-Spam-Status: No, score=-1.909 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_IMAGE_ONLY_32=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
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 1Nm1RuIhMvMC for <dnsop@ietfa.amsl.com>; Fri, 6 Mar 2015 11:14:24 -0800 (PST)
Received: from family.redbarn.org (family.redbarn.org [IPv6:2001:559:8000:cd::5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3754E1A1BD9 for <dnsop@ietf.org>; Fri, 6 Mar 2015 11:14:24 -0800 (PST)
Received: from [IPv6:2001:559:8000:cb:b015:3cb0:25ba:df77] (unknown [IPv6:2001:559:8000:cb:b015:3cb0:25ba:df77]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by family.redbarn.org (Postfix) with ESMTPSA id 8B0D61814C; Fri, 6 Mar 2015 19:14:24 +0000 (UTC)
Message-ID: <54F9FC8D.9050003@redbarn.org>
Date: Fri, 06 Mar 2015 11:14:21 -0800
From: Paul Vixie <paul@redbarn.org>
User-Agent: Postbox 3.0.11 (Windows/20140602)
MIME-Version: 1.0
To: Ralf Weber <dns@fl1ger.de>
References: <20150306172715.24305.58649.idtracker@ietfa.amsl.com> <CAN6NTqw4n_mTqjGDsOc4kT3fvm1PaCWKt+AUPw+4GevQqG3Ymw@mail.gmail.com> <20150306182444.GA50555@PorcupineTree.nominum.com>
In-Reply-To: <20150306182444.GA50555@PorcupineTree.nominum.com>
X-Enigmail-Version: 1.2.3
Content-Type: multipart/alternative; boundary="------------090803090809080709020403"
Archived-At: <http://mailarchive.ietf.org/arch/msg/dnsop/MlAWgkgT4uBE2EWsR5RbEyCFYS8>
Cc: Olafur Gudmundsson <olafur@cloudflare.com>, dnsop@ietf.org
Subject: Re: [DNSOP] Fwd: New Version Notification for draft-ogud-dnsop-any-notimp-00.txt
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dnsop/>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 06 Mar 2015 19:14:25 -0000


> Ralf Weber <mailto:dns@fl1ger.de>
> Friday, March 06, 2015 10:24 AM
> Moin!
> I do support this.

me too.

> But it will not stop reflection attacks.

very strong +1. such language must not be present in any form.

> Also why have
> you limited the this to authoritative servers?

this raises the point: ANY deserves its own access control list, or
other non-BIND equivilent. because ANY is useful for diagnostics, local
sysadmins ought to be able to make such queries.
>
> Also if you are thinking about minimising vectors for amplification
> attacks
> and complexity in the software implementation getting rid of RRSIG queries
> might be also a good thing to consider.

this way lies madness. you can't know that a validator has no reasonable
intent behind an RRSIG query.

again, the "protects against amplification/reflection" meme must be
nipped in the bud here.

-- 
Paul Vixie