Re: /etc/services losses

[Hauke Fath <hauke%Espresso.Rhein-Neckar.DE@localhost>]

On Mon, 31 Jul 2023 18:20:40 +0200, Steffen Nurpmeso wrote:
> Greg Troxel wrote in <rmijzuhkoa4.fsf%s1.lexort.com@localhost>:
>  |Hauke Fath <hauke%Espresso.Rhein-Neckar.DE@localhost> writes:
>  |> attached is a diff with services that for some reason or other got 
>  |> dropped from /etc/services - in particular Amanda* and AppleTalk.
>  |
>  |The really big question here is the relationship between our
>  |/etc/services and
>  | 
>  | 
<https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt>

Indeed, and our /etc/services looks a lot more like a copycat of that 
file than like the output of Steffen's script - thanks for that. Has it 
ever been used for a commit, though?

Looking at netbsd-5 for comparison, its etc/services has been properly 
line-wrapped to 80 columns, and it has a

# Local NetBSD additions [aliases or missing stuff]

section appended that is missing from later releases. The 'long form' 
was introduced by Christos' 1.95 commit. 

I would still argue, though, that the columns to the right of 
"Description" have no functionality, and could easily be looked up in 
the upstream reference.

>  |The use of mail for port 465 was apparently assigned briefly and then
>  |not (we have STARTTLS now)

... which <https://datatracker.ietf.org/doc/html/rfc8314> appears to 
deprecate in favour of non-plaintext connections:

|   o  Connections to Mail Submission Servers and Mail Access Servers be
|      made using "Implicit TLS" (as defined below), in preference to
|      connecting to the "cleartext" port and negotiating TLS using the
|      STARTTLS command or a similar command.

>  | and how is assigned to urd.  I never thought
>  |it was for submission.  It is not in the current IANA file.  So it's a
>  |good question why it remains at all.  I am therefore not ok with adding \
>  |smtps.
> 
> submissions is a standard, RFC 8314: [...]

IANA appears to have settled on submissions for port 465 (which, 
coincidentally, was assigned to 'urd' in the netbsd-5 version, and the 
NetBSD addition then declared the smtps alias). A web search for 
'smtps' confirms widespread use, so this should be maintained as an 
alias for 'submissions' IMO.

Cheerio,
Hauke

-- 
Hauke Fath                        <hauke%Espresso.Rhein-Neckar.DE@localhost>
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