Number of ports required for a floating license

I have added the server name and port to license.dat:

SERVER　servername　 mac address　10000

VENDOR alterad C:\FLEXlm\alterad.exe

# VENDOR mgcld C:\FLEXlm\mgcld.exe

USE_SERVER

I have confirmed that port 10000 is open using Test-NetConnection.

However, even when specifying "10000@servername" in the Quartus License Setup, the "Current license" is not recognized.

The "Current license" is recognized if I temporarily open all ports on the server side, but I cannot keep all ports open permanently.

Are there any other ports required besides port 10000?

Example: Port 10001 is required

SERVER　servername　 mac address　10000

VENDOR alterad C:\FLEXlm\alterad.exe　PORT=10001

# VENDOR mgcld C:\FLEXlm\mgcld.exe

USE_SERVER

Thank you for your assistance.