Choose two available port numbers for use by Ironstream and identify them in the list of PORT values in the PROFILE.TCPIP dataset:
6106 TCP VP390
6107 TCP VP390
(The default ports used by Ironstream are 6106 and 6107. The default job name for Ironstream is "VP390".)
Note: This step is optional. If specific port numbers are not reserved for Ironstream use, the Ironstream client connection will still succeed, but this reservation will flag the chosen port numbers for exclusive use by Ironstream so they are not used by other products on the mainframe.