Re: [DNSOP] refer-down
Paul Vixie <paul@redbarn.org> Tue, 29 May 2018 16:09 UTC
Return-Path: <paul@redbarn.org>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 399EE12EAB3 for <dnsop@ietfa.amsl.com>; Tue, 29 May 2018 09:09:41 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.901
X-Spam-Level:
X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001] autolearn=ham autolearn_force=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 xhf9s43L2IUk for <dnsop@ietfa.amsl.com>; Tue, 29 May 2018 09:09:40 -0700 (PDT)
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 9670312EB2F for <dnsop@ietf.org>; Tue, 29 May 2018 09:09:33 -0700 (PDT)
Received: from [IPv6:2001:559:8000:c9:fdff:12ad:acf5:9a06] (unknown [IPv6:2001:559:8000:c9:fdff:12ad:acf5:9a06]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by family.redbarn.org (Postfix) with ESMTPSA id 31A5B89291; Tue, 29 May 2018 16:09:32 +0000 (UTC)
Message-ID: <5B0D7B39.9020904@redbarn.org>
Date: Tue, 29 May 2018 09:09:29 -0700
From: Paul Vixie <paul@redbarn.org>
User-Agent: Postbox 5.0.25 (Windows/20180328)
MIME-Version: 1.0
To: John Levine <johnl@taugh.com>
CC: dnsop@ietf.org, ajs@anvilwalrusden.com
References: <20180529155224.511AA2749879@ary.qy>
In-Reply-To: <20180529155224.511AA2749879@ary.qy>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/AwdZN2UDucyUV6uQRLBPGK-s1fk>
Subject: Re: [DNSOP] refer-down
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.22
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: <https://mailarchive.ietf.org/arch/browse/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: Tue, 29 May 2018 16:09:42 -0000
John Levine wrote: > ... > > I'm guessing that it's intended to mean return the answer if you > already have it. If so, we should document that. I see that unbound > makes it an option but normally refuses any RD=0 queries. it's a diagnostic query, like qtype=ANY, or qtype=NS. answering it should be privileged in some way, since it's an information leak that does not help the rdns operator in any way, but may help an attacker. -- P Vixie
- Re: [DNSOP] refer-down Andrew Sullivan
- [DNSOP] refer-down Andrew Sullivan
- Re: [DNSOP] refer-down Mukund Sivaraman
- Re: [DNSOP] refer-down Andrew Sullivan
- Re: [DNSOP] refer-down Mukund Sivaraman
- Re: [DNSOP] refer-down Andrew Sullivan
- Re: [DNSOP] refer-down John Levine
- Re: [DNSOP] refer-down John Levine
- Re: [DNSOP] refer-down Andrew Sullivan
- Re: [DNSOP] refer-down Paul Vixie