Shown in the following table are the default ports used by the Ethernet 241 for communication. With the exception of discovery, port 11000, all ports are user selectable. For correct operation of the Ethernet 241, all ports must be available. Verify that all ports are allowed in your firewall settings.
Related articles:
https://knowledgebase.rfideas.com/how-to-use-the-discovery-tool-to-locate-my-e241-device/