All ports that are used by SGCS shall be clearly documented. The documentation
shall contain information about which ports are used, how they are configured
and any mechanisms used if the configured port is unavailable (example:
scanning for the next port that is available).
It shall be possible to either configure the specific ports or the port ranges
used by SGCS.
This is important when applications start to co-locate other processes with
SGCS, since there may be port clashes. Also this information is needed if
multiple server instances (or JVM) should be located on the same host.