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Re: Free TCP/IP port numbers?

On Sun, Oct 1, 2017 at 7:44 AM, Victor Porton <porton@xxxxxxxx> wrote:

I received no satisfactory answer.
So I feel that there is no Debian policy on using port numbers.
This policy should be added to Debian!
It may be something like: "Debian packages (with default configuration) are
allowed to bind ports 1-10000. Ports 10001-32000 are available for users."
Please discuss.

Trying to return to the original subject....
If this is a server environment, you should already know which ports are open and
in use in your network. There should be no mysteries. Files identifying configured
port numbers, especially if you have numerous local values, should be placed 
under source-control and distributed/maintained by configuration management
software like salt, puppet, etc. This is the only way that good consistency can
be maintained, but it affords you great flexibility.

WRT the "no Debian policy on using port numbers", the only authority, so far as it
goes, is the IANA. Every site may choose to respect or ignore those values within
the limits of their installed software base and configurability of applications. Debian
can't really influence that state of affairs and any claims it stakes to certain ports
are simply going to be ignored in most cases.
Victor Porton - http://portonvictor.org