Is there Any Ports Used to connect License Server Manager to Client beside 27000-27009 ?
Im connecting arcmap 10.6.1 to license manager 2018 it keeps fail because some port keep changing every week ,
License manager keeps asking for temporary Port to open to make arcmap like 51883 connect and this port keep changing every week and arcmap keeps Disconnecting !!
You have to bind the Esri Vendor daemon of the FlexNetPublisher (FNP) configuration to a specific port.
Setting both the listening FNP lmgrd port, and the Esri ARCGIS component "VENDOR PORT=####" are clearly spelled out in the ArcGIS License Manager Guide...
It is possible to specify one port for the ArcGIS License Manager to communicate on. This involves altering the service.txt file on the machine with the License Manager. The instructions on how to do this can be found here: Configure ArcGIS License Manager to work through a firewall—Help | ArcGIS for Desktop
Let me know if you have any questions.