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Re: MacOS TCP port permissions

From cross@spitfire.i.gajendra.net (Dan Cross)
Newsgroups comp.unix.programmer
Subject Re: MacOS TCP port permissions
Date 2026-04-17 14:50 +0000
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <10rthb3$449$1@reader1.panix.com> (permalink)
References <10rq7hc$1b1bt$1@dont-email.me> <69e1dd4f$0$7095$426a74cc@news.free.fr> <wwvfr4uuimd.fsf@LkoBDZeT.terraraq.uk> <69e23a5a$0$992$426a74cc@news.free.fr>

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In article <69e23a5a$0$992$426a74cc@news.free.fr>,
Nicolas George  <nicolas$george@salle-s.org> wrote:
>Richard Kettlewell , dans le message
><wwvfr4uuimd.fsf@LkoBDZeT.terraraq.uk>, a écrit :
>> That only works in specific niches.
>> 
>> * macOS is not the first OS to discard the ‘privileged port’ concept;
>>   Windows never had it.
>
>Only idiots run servers on these systems anyway.

What a ridiculously simplistic take.

Consider a corporate network with central administration of e.g.
Mac and Windows workstations: you know, the kind of network that
people use to actually get stuff done.

Those workstations almost certainly run some kind of service
agent that provides the interface for participating in the
management system: providing telemetry, updating software; all
that kind of thing.  This obviously implies running some kind
of "server" on those systerms.

Cryptographically authenticating those servers is far, far more
secure than relying on some notion of privileged "port".  And
once all of your services are using strong authentication, what
is the value of restricting access to ports based on their
number?

	- Dan C.

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Thread

MacOS TCP port permissions boltar@caprica.universe - 2026-04-16 08:44 +0000
  Re: MacOS TCP port permissions Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2026-04-16 13:23 +0100
    Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-16 14:48 +0000
      Re: MacOS TCP port permissions Richard Kettlewell <invalid@invalid.invalid> - 2026-04-16 20:29 +0100
        Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-17 10:31 +0000
          Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-17 14:04 +0000
            Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-17 14:41 +0000
              Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-17 15:20 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-17 15:50 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-17 16:09 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 10:28 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 15:06 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 15:26 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 15:48 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 15:52 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 15:56 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 15:59 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 16:12 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-19 09:02 +0000
                Re: MacOS TCP port permissions scott@slp53.sl.home (Scott Lurndal) - 2026-04-18 15:56 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 15:58 +0000
                Re: MacOS TCP port permissions Nuno Silva <nunojsilva@invalid.invalid> - 2026-04-19 00:05 +0100
                Re: MacOS TCP port permissions Nuno Silva <nunojsilva@invalid.invalid> - 2026-04-19 00:01 +0100
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 23:50 +0000
                Re: MacOS TCP port permissions scott@slp53.sl.home (Scott Lurndal) - 2026-04-17 19:56 +0000
                Re: MacOS TCP port permissions Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-17 13:34 -0700
                Re: MacOS TCP port permissions Richard Kettlewell <invalid@invalid.invalid> - 2026-04-17 22:53 +0100
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-17 22:56 +0000
                Re: MacOS TCP port permissions Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-17 16:48 -0700
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 01:56 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 10:39 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 15:08 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 15:28 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 15:48 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 15:55 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 15:57 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-19 09:00 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-19 13:20 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-20 09:34 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-20 12:42 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-20 14:14 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-20 17:04 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 10:36 +0000
                Re: MacOS TCP port permissions Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-18 17:54 -0700
                Re: MacOS TCP port permissions baltar@caprica.prime - 2026-04-19 09:08 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-19 13:29 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-20 09:35 +0000
                Re: MacOS TCP port permissions Nuno Silva <nunojsilva@invalid.invalid> - 2026-04-19 10:45 +0100
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-20 09:32 +0000
                Re: MacOS TCP port permissions Nuno Silva <nunojsilva@invalid.invalid> - 2026-04-20 23:52 +0100
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-21 08:27 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 10:30 +0000
              Re: MacOS TCP port permissions Richard Kettlewell <invalid@invalid.invalid> - 2026-04-17 20:09 +0100
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 10:32 +0000
                Re: MacOS TCP port permissions Richard Kettlewell <invalid@invalid.invalid> - 2026-04-18 13:02 +0100
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 14:40 +0000
                Re: MacOS TCP port permissions kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-04-18 15:14 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 15:29 +0000
                Re: MacOS TCP port permissions kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-04-18 15:52 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-18 15:57 +0000
                Re: MacOS TCP port permissions kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-04-18 15:59 +0000
                Re: MacOS TCP port permissions Nuno Silva <nunojsilva@invalid.invalid> - 2026-04-19 00:24 +0100
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 23:53 +0000
                Running sshd on another port does have merit - even if in theory it does not (Was: MacOS TCP port permissions) gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-19 16:01 +0000
                Re: Running sshd on another port does have merit - even if in theory it does not kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-04-19 16:28 +0000
                Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-19 09:03 +0000
                Re: MacOS TCP port permissions Nuno Silva <nunojsilva@invalid.invalid> - 2026-04-19 10:26 +0100
                Re: MacOS TCP port permissions Richard Kettlewell <invalid@invalid.invalid> - 2026-04-18 17:07 +0100
                Re: MacOS TCP port permissions Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-04-18 22:36 +0000
      Re: MacOS TCP port permissions Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-04-16 23:23 +0000
        Re: MacOS TCP port permissions Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-16 16:34 -0700
        Re: MacOS TCP port permissions Nuno Silva <nunojsilva@invalid.invalid> - 2026-04-17 01:00 +0100
        Re: MacOS TCP port permissions Nicolas George <nicolas$george@salle-s.org> - 2026-04-17 07:12 +0000
          Re: MacOS TCP port permissions Richard Kettlewell <invalid@invalid.invalid> - 2026-04-17 08:54 +0100
            Re: MacOS TCP port permissions Nicolas George <nicolas$george@salle-s.org> - 2026-04-17 13:49 +0000
              Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-17 14:50 +0000
              Re: MacOS TCP port permissions Nuno Silva <nunojsilva@invalid.invalid> - 2026-04-18 09:22 +0100
                Re: MacOS TCP port permissions scott@slp53.sl.home (Scott Lurndal) - 2026-04-18 15:55 +0000
                Re: MacOS TCP port permissions cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-18 16:09 +0000
        Re: MacOS TCP port permissions boltar@caprica.universe - 2026-04-17 10:31 +0000
          Re: MacOS TCP port permissions Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-04-17 22:53 +0000
      Goodbye, Privileged Ports! [was Re: MacOS TCP port permissions] cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-17 14:58 +0000

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