Re: Free TCP/IP port numbers?
- Date: Sun, 1 Oct 2017 09:15:37 -0400
- From: Michael Stone <mstone@xxxxxxxxxx>
- Subject: Re: Free TCP/IP port numbers?
On Sun, Oct 01, 2017 at 03:44:45PM +0300, Victor Porton 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."
It isn't really possible to do this, because of the need to interoperate
with other systems. IANA may assign ports in the range 0 through 49151.
Currently Debian/Linux uses 32768 through 60999 for ephemeral ports.
(Note the overlap there!) You can try using 61001 through 65534 as
a range that's fairly unlikely to be assigned to anything, assuming
nobody changes net.ipv4.ip_local_port_range, and with the knowledge that
using such a range could cause interoperability problems if some of the
servers use other operating systems (that might use that range for