Alexander V. Makartsev wrote: > There is official list of all registered port numbers: > https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt > > You can choose any port that is not in the list, to be sure they won't > clash.
The list of port numbers you pointed to me is a subset (or at least not a superset) of the full list used by Debian packages. Assuring that my port is not in this IANA list is not enough to ensure that my port number will not clash with a port number used by a Debian package (by default). So your answer to my question is wrong. > On 01.10.2017 06:04, Victor Porton wrote: >> We are going to install a range of software on a Debian Linux >> installation. Because we run the same software (such as Celery) several >> times, we need to use port numbers different than the standard Debian >> port numbers chosen by default (because we can't run more than one >> instance of a server with the same port, and thus using the standard port >> number for all servers would fail). >> >> How to choose TCP/IP port numbers for server software we run in such a >> way that they don't clash with "standard" Debian port numbers? >> >> In Debian are there any ranges of port numbers dedicated (so that they >> wouldn't clash with "standard" that is used by default port numbers) for >> servers configured by users? >> >> Note that we run (at least some of) our software not as root, so we can't >> use ports below 1024. -- Victor Porton - http://portonvictor.org