Port Configuration for License Access with Firewalls
We need to have static ports that allow remote users to check out licenses. When the firewall is activated it is not possible to check out a license. With the firewall enabled, when lmgrd starts it uses the assigned port specified on the SERVER line of the license file, but there is an additional random port being used, that is blocked.
By default, FLEXlm just grabs a random available port for the vector vendor daemon communication. You can force it to use the same port number every time by adding PORT=<number> at the end of the DAEMON line in the license file.