[Ntp] Antw: [EXT] Re: Mirja Kühlewind's Discuss on draft-ietf-ntp-using-nts-for-ntp-24: (with DISCUSS and COMMENT)

Hi Harlan,

it's obvious that you want to keep port 123/TCP reserved for NTP. However
there were no projects in the last 20 years that would have wanted that port.
Aslo Dave Mills once said NTP over TCP does not make sense at all, and the
whole protocol design is incompatible with it. So at best the stil-to-be-done
NTP v5 could use that port.

Sorry I did not attend the meetings you are referring to, but still from time
to time you could repeat the facts instead of referring to them.

Regards,
Ulrich

>>> Harlan Stenn <stenn@nwtime.org> schrieb am 20.03.2020 um 06:06 in
Nachricht
<31041_1584680845_5E744F8D_31041_97_1_ced12651-75fb-d5ee-3ea6-95a1e1a6aaaf@nwtim
.org>:

> 
> On 3/19/2020 9:47 PM, Hal Murray wrote:
>> 
>> stenn@nwtime.org said:
>>> The NTP Project has sent its plans for TCP/123 to the working group, to
be
>>> used by "NTP TCP Services".  We intend this to be used for a variety of
>>> NTP‑related TCP services.  That is a work in progress.  Otherwise, the
NTP
>>> Project remains strongly opposed to using TCP/123 for NTS‑KE because of
<good
>>> reasons we have stated before to the WG, and I want to save everybody the
>>> drama so I won't go in to them now>. 
>> 
>> Your "good reasons" would carry more weight in my view if you would provide

> a 
>> reference to your ideas.
> 
> Hal, I'm pretty sure you at least virtually attended the meetings where
> this was discussed.
> 
> I've also posted various emails about it.
> 
>> Google found 2 drafts from 2018.  The total useful content was 2 paragraphs

>> with few details.  Maybe I didn't search for the right thing.  The first 
> said 
>> TCP and STARTTLS.  The second said key exchange.  In my opinion, both have

>> been superseded by NTS‑KE.
>> 
>> Are there other ideas I didn't find?
>> 
>> I think it would be a good idea to move ntpq operations to a secure
channel. 
>  
>> NTS‑KE uses ALPN.  Is there any reason not to take advantage of ALPN so we

> can 
>> share port 123 with future ideas?
> 
> Please look at what I have said before.
> 
> ‑‑ 
> Harlan Stenn <stenn@nwtime.org>
> http://networktimefoundation.org ‑ be a member!
> 
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