In case the License Server Utility is running on a machine behind the firewall, TCP/IP port for license server manager (lmgrd) and the vendor daemon (unisw20) should be explicitly specified in the license file (MILICSERVER.lic). The specified ports should be opened on the firewall. The MILICSERVER.lic file is located in the LicenseServerUtilty installation folder. The port information is specified in the first two (2) lines in the license file.
SERVER this_host ANY LicenseServerManagerPortnumber
VENDOR unisw20 PORT=VendorDemonPortNumber
The LicenseServerManagerPortnumber should be between 1–64000.
Note: After any change is done in the license file the Precisely License Server service should be restarted