I agree with Eliot.
The idea of system ports is a quaint artifact of a bygone era.
In the days of timesharing, when you'd have 100 lusers on your box,
you didn't want one of the darlings to bind to port 25 (e.g.).
These days, however, it causes as many problems as it might solve. A
box tends to have one user, or it's a server with a collection of
cooperating processes. So if a user-level process wants to bind to
port 25, it has to have root privs when it would not have to
ordinarily. Other systems, like a web server, have hoops to jump
through to de-root themselves.
So no, we don't need a system port. Getting one is as likely to cause
problems as cure them. And the very concept should go away.
Jon
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