[Tls-reg-review] Request to register NNTP in TLS ALPN registry

Julien ÉLIE <julien@trigofacile.com> Mon, 20 September 2021 06:35 UTC

Return-Path: <julien@trigofacile.com>
X-Original-To: tls-reg-review@ietfa.amsl.com
Delivered-To: tls-reg-review@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 128263A125B for <tls-reg-review@ietfa.amsl.com>; Sun, 19 Sep 2021 23:35:43 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.899
X-Spam-Level:
X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=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 hMyuf1gxVM3Y for <tls-reg-review@ietfa.amsl.com>; Sun, 19 Sep 2021 23:35:38 -0700 (PDT)
Received: from denver.dinauz.org (denver.dinauz.org [37.59.56.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 397F53A1255 for <tls-reg-review@ietf.org>; Sun, 19 Sep 2021 23:35:36 -0700 (PDT)
Received: from localhost (localhost.localdomain [127.0.0.1]) by denver.dinauz.org (Postfix) with ESMTP id 88E2060584 for <tls-reg-review@ietf.org>; Mon, 20 Sep 2021 08:35:33 +0200 (CEST)
Received: from denver.dinauz.org ([127.0.0.1]) by localhost (denver.dinauz.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6DRG1ertYCcI for <tls-reg-review@ietf.org>; Mon, 20 Sep 2021 08:35:33 +0200 (CEST)
Received: from MacBook-Pro-de-Julien.local (176-143-2-105.abo.bbox.fr [176.143.2.105]) by denver.dinauz.org (Postfix) with ESMTPSA id 63A1B60581 for <tls-reg-review@ietf.org>; Mon, 20 Sep 2021 08:35:33 +0200 (CEST)
To: tls-reg-review@ietf.org
From: Julien ÉLIE <julien@trigofacile.com>
Message-ID: <86497796-8995-192f-fd92-b870e58f8b75@trigofacile.com>
Date: Mon, 20 Sep 2021 08:35:33 +0200
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.14.0
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"; format="flowed"
Content-Language: fr
Content-Transfer-Encoding: 8bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/tls-reg-review/sn5tnHLcE3RlWwXkivqsbNEgyHo>
Subject: [Tls-reg-review] Request to register NNTP in TLS ALPN registry
X-BeenThere: tls-reg-review@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: TLS REVIEW <tls-reg-review.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tls-reg-review>, <mailto:tls-reg-review-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tls-reg-review/>
List-Post: <mailto:tls-reg-review@ietf.org>
List-Help: <mailto:tls-reg-review-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tls-reg-review>, <mailto:tls-reg-review-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 20 Sep 2021 06:35:43 -0000

Hi all,

Having seen in draft-ietf-uta-rfc7525bis (-02) that "protocol developers 
are strongly encouraged to register an ALPN identifier for their 
protocols", and having the support of the (closed) IETF NNTP WG:
   https://lists.eyrie.org/pipermail/ietf-nntp/2021-September/thread.html

I would like to register TLS ALPN registry entries for Network News 
Transfer Protocol (NNTP):

  Protocol:  NNTP (reading)
  Identification Sequence:  0x6E 0x6E 0x74 Ox70  ("nntp")
  Reference:  [RFC3977]

  Protocol:  NNTP (transit)
  Identification Sequence:  0x6E 0x6E 0x73 Ox70  ("nnsp")
  Reference:  [RFC3977]

So as to distinguish mode-switching news server, NNTP makes use of 2 
ports (119 for reading and 433 for transit) as described in Section 
3.4.1 of [RFC3977].  These ports are named "119 nntp" and "433 nnsp", 
which is the rationale for the identification sequence.


Note that some news servers are already accessible from HTTPS port (443) 
like <https://news.aioe.org/> or 
<https://www.eternal-september.org/index.php?showpage=techinfo> (though 
no web server currently listens there at the same time).
So ALPN can really be a great improvement if more and more generalised 
and used with for instance sslh (a ssl/ssh multiplexer).



I am unsure what references are needed to allow the registration.  Is 
the core NNTP reference [RFC3977] enough?  Or do you prefer the one for 
TLS implementation in NNTP [RFC4642] or maybe its update [RFC8143] 
recommending to follow [BCP195] best practices?
I've seen that a (quick) Internet-Draft has been asked for the 
registration of SIP.  Is it really necessary?  (seems overkill to me) I 
for instance do not see such references for the FTP or IRC registrations...
Nevertheless, I'm of course fine with your decision.

Thanks beforehand for having a look at my request.

-- 
Julien ÉLIE

« On appelle ça une insula. C'est une maison où les gens habitent les
   uns au-dessus des autres… » (Astérix)