<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">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 <aubrey.mcintosh@utexas.edu>:<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">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><div dir="ltr"><div dir="ltr"><div><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></div></div>
</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><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>
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