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<p>Hi,</p>
<p>According to <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Ephemeral_port">https://en.wikipedia.org/wiki/Ephemeral_port</a> the
range of private ports seems to be OS dependent, though IANA
suggests the one you mentioned. Some OS give the administrator the
possibility to modify that range.<br>
</p>
<p>For system and user ports, you can find the ones registered by
IANA on
<a class="moz-txt-link-freetext" href="https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml">https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml</a></p>
<p>These are a few large ranges that are currently marked as
unassined by IANA in above list:</p>
<p>29170-29998<br>
41798-42507<br>
43442-44122<br>
46337-46997<br>
35358-36000<br>
39064-39680<br>
36866-37471<br>
41231-41793<br>
26490-26999</p>
<p>Note that on Linux you need to stay below port 32768 to stay in
the user range.<br>
</p>
claudio<br>
<p>On 15.12.22 00:19, Joerg wrote:<br>
</p>
<blockquote type="cite"
cite="mid:0F7BE3B8-82EE-413E-A0CD-26FB32DD9A6E@iaeth.ch">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
There are three types of port numbers
<div>- system ports: 0..1023</div>
<div>- user ports: 1024..49151</div>
<div>- private ports: 49152..65535</div>
<div><br>
</div>
<div>On most systems:</div>
<div>- system ports (well known ports) normally need admin rights
and should not be used for own applications.</div>
<div>- user ports can be used for own applications but can be
registered with IANA to avoid conflicts with other applications</div>
<div>- private (aka dynamic, aka ephemeral) ports are not
registered.</div>
<div><br>
<div dir="ltr">br<br>
<div>Jörg</div>
</div>
<div dir="ltr"><br>
<blockquote type="cite">Am 14.12.2022 um 23:56 schrieb Aubrey
McIntosh <a class="moz-txt-link-rfc2396E" href="mailto:aubrey.mcintosh@utexas.edu"><aubrey.mcintosh@utexas.edu></a>:<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div>Although 1934 might be more auspicious.</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Dec 14, 2022 at
4:52 PM Aubrey McIntosh <<a
href="mailto:aubrey.mcintosh@utexas.edu"
moz-do-not-send="true" class="moz-txt-link-freetext">aubrey.mcintosh@utexas.edu</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>What is a good port number to use with the
Component Pascal CommServer program?</div>
<div><br>
</div>
<div>The default port, 900, as distributed appears to
be unavailable to an ordinary user in Ubuntu. It is
possible to run the server as a privileged user and
use port 900.<br>
</div>
<div><br>
</div>
<div>I have temporarily chosen 1951 for testing my own
project, and to run it as an ordinary user.<br>
</div>
<div>
<div>
<div><br>
-- <br>
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<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">Aubrey
McIntosh, PhD</div>
<div dir="ltr"><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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</div>
</blockquote>
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<br>
-- <br>
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<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">Aubrey McIntosh, PhD</div>
<div dir="ltr"><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<span>--</span><br>
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and related systems</span><br>
<span><a class="moz-txt-link-freetext" href="https://lists.inf.ethz.ch/mailman/listinfo/oberon">https://lists.inf.ethz.ch/mailman/listinfo/oberon</a></span><br>
</div>
</blockquote>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre class="moz-quote-pre" wrap="">--
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Claudio Nieder, Ruhestrasse 7, 8045 Zürich, 079 357 67 43</pre>
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