The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers (https://www.iana.org/assignments/port-numbers). However, many unofficial uses of both well-known and registered port numbers occur in practice. Ports officially used by FLEXnet license manager for Autodesk products:
flex-lm 27000-27009 FLEX LM (1-10)
autodesk-nlm 2080/tcp Autodesk NLM (FLEXlm)
autodesk-nlm 2080/udp Autodesk NLM (FLEXlm)
In some particular cases you may have to use different ports.
Note: These changes are not officially supported as they may generate conflicts with other applications and spin out of control; hence we strongly recommend not to change the ports unless it is absolutely necessary.
To change the ports you have to modify the license file as follows:
Original license file (first 3 lines)
SERVER <HOSTNAME> <ETH. ADDRESS>
VENDOR adskflex port=2080
Modified license file:
SERVER <HOSTNAME> <ETH. ADDRESS> <PORT #>
VENDOR adskflex port=<####>