What is the range of ports used by CA Workload Automation DE to allow for Desktop Client connectivity with the DE Manager? Port 7500 is used to connect to the DE Manager, but what range of ports are assigned at the DE Manager level?
Ports are not assigned by the DE Manager. The ports that get assigned for outgoing communications are done so by the OS/Firewall. This varies from one Operating System to another. Your Network Administrator/System Administrator should check out the OSI model.
https://en.wikipedia.org/wiki/OSI_model
https://en.wikipedia.org/wiki/Ephemeral_port