Re: [secdir] Secdir review of draft-ietf-netmod-opstate-reqs-04
Benoit Claise <bclaise@cisco.com> Thu, 18 February 2016 16:20 UTC
Return-Path: <bclaise@cisco.com>
X-Original-To: secdir@ietfa.amsl.com
Delivered-To: secdir@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0C0E81B2E61; Thu, 18 Feb 2016 08:20:37 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -14.507
X-Spam-Level:
X-Spam-Status: No, score=-14.507 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.006, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] 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 mN5Mqg6JO0gx; Thu, 18 Feb 2016 08:20:35 -0800 (PST)
Received: from aer-iport-4.cisco.com (aer-iport-4.cisco.com [173.38.203.54]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 77D451B2E4F; Thu, 18 Feb 2016 08:20:33 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3061; q=dns/txt; s=iport; t=1455812434; x=1457022034; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=suvd2Yqf8UM1dJtd6c0S8DsGbRPDCcD7T/2ZWz6i9n0=; b=YN4NVPTvwV40+PzXYTaiXHPTweXqmSgFAt5ViA764u3S5hiCwhUaMAg5 OAUwprm55GyqjwtOKWabsZk3XP3TO1BqHq4OTyMU97l226pYb/mucJI+U MPc32x9+9alPhE0RvWKruMNSxOyu7Ds1iRtsN9l1nx51ViaellaM3OfSG 4=;
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: A0CoBACz7sVW/xbLJq1ewQ2GDQKCLQEBAQEBAWUnhEIBAQQ4QBELIRYPCQMCAQIBRQYBDAgBAYgWu14BAQEBAQEBAQIBAQEBAQEahhKEO4QdhFIBBJcFjVqBXIRDgwKFUo5HYoNkO4lNAQEB
X-IronPort-AV: E=Sophos;i="5.22,466,1449532800"; d="scan'208";a="635584835"
Received: from aer-iport-nat.cisco.com (HELO aer-core-2.cisco.com) ([173.38.203.22]) by aer-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Feb 2016 16:20:31 +0000
Received: from [10.61.83.28] (ams3-vpn-dhcp4893.cisco.com [10.61.83.28]) by aer-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id u1IGKV7h018214; Thu, 18 Feb 2016 16:20:31 GMT
To: Tero Kivinen <kivinen@iki.fi>, iesg@ietf.org, secdir@ietf.org, draft-ietf-netmod-opstate-reqs.all@tools.ietf.org, NETMOD Working Group <netmod@ietf.org>
References: <22204.24528.791620.642938@fireball.acr.fi>
From: Benoit Claise <bclaise@cisco.com>
Message-ID: <56C5EF4E.9080107@cisco.com>
Date: Thu, 18 Feb 2016 17:20:30 +0100
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1
MIME-Version: 1.0
In-Reply-To: <22204.24528.791620.642938@fireball.acr.fi>
Content-Type: text/plain; charset="windows-1252"; format="flowed"
Content-Transfer-Encoding: 7bit
Archived-At: <http://mailarchive.ietf.org/arch/msg/secdir/FaLGL5OQMbyfLa6hDK_XDqbSIyc>
Subject: Re: [secdir] Secdir review of draft-ietf-netmod-opstate-reqs-04
X-BeenThere: secdir@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Security Area Directorate <secdir.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/secdir>, <mailto:secdir-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/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: Thu, 18 Feb 2016 16:20:37 -0000
Tom, Kent, WG, Can you please engage with Tero. I would like to put this document on the telechat in 2 weeks from now. Regards, Benoit > I have reviewed this document as part of the security directorate's > ongoing effort to review all IETF documents being processed by the > IESG. These comments were written primarily for the benefit of the > security area directors. Document editors and WG chairs should treat > these comments just like any other last call comments. > > This is terminology and requirements document for handling operational > state. As such the security considerations section cannot have very > detailed problems, but it does properly point out that while > configuration is being applied the device might be in inconsistent > state, and that might cause security issues. > > It does not say anything about how the configuration requests needs to > be secured, but I assume that is more in to the actual protocol RFC > issue, than this document. > > It does not also comment anything about whether the different states > (intended configuration, applied configuration and derivative state) > should have different security policies to applied to them, i.e. > it does say that it should be possible to retrieve only applied > configuration or only derived state, but does not mention should there > also be different security policies to do those operations. In some > cases the derivative state might contain things like traffic keys > negotiated during the protocol runs, or traffic information aabout > flows passing the devices (privacy issues), so derivative state might > be more sensitive than the actual applied configuration. > > Outside the security considerations section the requirement which > says: > > A. A server MUST support only synchronous configuration > operations, or only asynchronous configuration operations, or > both synchronous and asynchronous configuration operations on > a client-specified per-operation basis. > > is bit funny, as it effectively says that either syncronous or > asyncronous MUST be supported and both may be supported, but I do not > understand what the "client-specified per-operation basis" is meaning > for the requirement for server. > > Client cannot really require server to change its IMPLEMENTATION on > per-operation basis (i.e., client 1 requesting that server MUST > support only asyncronous operations, and client 2 requesting that > server MUST support only syncronous operations). > > Client can use either syncronous or asyncronous if both are supported > by the server, and I assume this is trying to say that client can > select syncronous/asyncronous operation per-operation basis, but when > you are talking about that "A server MUST support ..." I do not think > it is ok to requiring that on a client-specified way. > > I.e. proper way would be to say that if server supports both, it MUST > allow client to select which method is used on per-operation basis.
- [secdir] Secdir review of draft-ietf-netmod-opsta… Tero Kivinen
- Re: [secdir] Secdir review of draft-ietf-netmod-o… Benoit Claise