Minimum Dynamic Server (-minport)

Operating system and syntax UNIX 
-minport n
Use with Maximum value Minimum value Single-user default Multi-user default
Database Server 65,535 1,025 – 12,000
Operating system and syntax Windows -minport n
Use with Maximum value Minimum value Single-user default Multi-user default
Database Server 65,535 1,025 — 3,000
n
The port number that is the lowest in a specified range.

Use Minimum Dynamic Server (-minport) to specify the lowest port number in a specified range of port numbers accessible to a client. The -minport parameter must be set to a port number that is less than the -maxport parameter. Ports below 1025 are usually reserved for system TCP and UDP. The range of port numbers defined by the -maxport and -minport parameters provides client access to an OpenEdge server that is behind a firewall. This communication is possible only when the access to the server can be limited.

The Minimum Dynamic Server (-minport) parameter may be modified while your database is online using PROMON or through the _DbParams VST. This change will only take effect on the primary broker and any newly spawned servers. Online changes to existing secondary brokers will require a restart.

Note: Use the proserve db -S parameter at the database broker startup to configure the -minport. For example, 
proserve db -S demov1 -N tcp -H myhost -minport 4000 -maxport 4040
If you do not set the proserve db -S parameter at database broker startup, then -minport is not applicable and the log file reports its value as 0.