IETF Logo Mail Archive

Re: [Ntp] Benjamin Kaduk's Discuss on draft-ietf-ntp-using-nts-for-ntp-23: (with DISCUSS and COMMENT)

Sandra Murphy <sandy@tislabs.com> Thu, 26 March 2020 15:34 UTC

Return-Path: <sandy@tislabs.com>
X-Original-To: ntp@ietfa.amsl.com
Delivered-To: ntp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7E9F63A0DED; Thu, 26 Mar 2020 08:34:35 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.233
X-Spam-Level:
X-Spam-Status: No, score=-1.233 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665, URIBL_BLOCKED=0.001] autolearn=no 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 HgQuFOS-pI6F; Thu, 26 Mar 2020 08:34:33 -0700 (PDT)
Received: from walnut.tislabs.com (walnut.tislabs.com [192.94.214.200]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AEE113A0D59; Thu, 26 Mar 2020 08:34:32 -0700 (PDT)
Received: from nova.tislabs.com (unknown [10.66.1.77]) by walnut.tislabs.com (Postfix) with ESMTP id AA98828B003D; Thu, 26 Mar 2020 11:34:30 -0400 (EDT)
Received: from [127.0.0.1] (localhost.localdomain [127.0.0.1]) by nova.tislabs.com (Postfix) with ESMTP id 5D0431F804E; Thu, 26 Mar 2020 11:34:30 -0400 (EDT)
Content-Type: text/plain; charset="utf-8"
Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\))
From: Sandra Murphy <sandy@tislabs.com>
In-Reply-To: <648F14E5-4B2A-4FE1-BFCD-F67E3D3BCEF9@netnod.se>
Date: Thu, 26 Mar 2020 11:34:28 -0400
Cc: Sandra Murphy <sandy@tislabs.com>, NTP WG <ntp@ietf.org>, Karen O'Donoghue <odonoghue@isoc.org>, draft-ietf-ntp-using-nts-for-ntp@ietf.org, Benjamin Kaduk <kaduk@mit.edu>, ntp-chairs@ietf.org, The IESG <iesg@ietf.org>
Content-Transfer-Encoding: quoted-printable
Message-Id: <73B6EC46-8C9C-4322-A2C7-0F1179CBBF17@tislabs.com>
References: <158388613361.15157.697889274707951578@ietfa.amsl.com> <D92AF7D4-3CFC-42FB-A8C0-405C98B76658@netnod.se> <20200319212155.GL50174@kduck.mit.edu> <62B9E7DC-53F1-49B6-AB86-CA357F1ACB63@tislabs.com> <648F14E5-4B2A-4FE1-BFCD-F67E3D3BCEF9@netnod.se>
To: Ragnar Sundblad <ragge@netnod.se>
X-Mailer: Apple Mail (2.3445.9.1)
Archived-At: <https://mailarchive.ietf.org/arch/msg/ntp/k5IvuXslWeyIciJORSOhcbeoB8o>
Subject: Re: [Ntp] Benjamin Kaduk's Discuss on draft-ietf-ntp-using-nts-for-ntp-23: (with DISCUSS and COMMENT)
X-BeenThere: ntp@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <ntp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ntp>, <mailto:ntp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ntp/>
List-Post: <mailto:ntp@ietf.org>
List-Help: <mailto:ntp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ntp>, <mailto:ntp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 26 Mar 2020 15:34:48 -0000

Correct.

> On Mar 26, 2020, at 9:21 AM, Ragnar Sundblad <ragge@netnod.se> wrote:
> 
> 
> 
>> On 26 Mar 2020, at 13:03, Sandra Murphy <sandy@tislabs.com> wrote:
>> 
>> 
>> 
>>> On Mar 19, 2020, at 5:21 PM, Benjamin Kaduk <kaduk@mit.edu> wrote:
>>> 
>>>>> 
>>>>> Section 4
>>>>> 
>>>>> Is there any significance to the ordering of records within a message
>>>>> (other than End of Message)?
>>>> 
>>>> No.
>> 
>> 
>> Actually, there is a bit of ordering significance.  The NTS Authenticator and Encrypted Extension Fields extension field provides authentication of the NTP protocol header and extension fields that precede it.  Extension headers that follow that extension field are neither authenticated nor encrypted.
>> 
>> —Sandy
> 
> You are right that there is in the NTP part, Section 5, but Section 4 is about the KE protocol, and there there isn’t any.
> 
> Ragnar
> 
> _______________________________________________
> ntp mailing list
> ntp@ietf.org
> https://www.ietf.org/mailman/listinfo/ntp

v2.23.0 | Report a Bug | By Email