Registering the FortiGate as a RADIUS accounting server on the FortiConnect

On FortiConnect, go to Devices > RADIUS Accounting Servers and add your FortiGate a RADIUS accounting server.
Enter a Name and the Server IP Address of the FortiGate that matches the interface that listens to the RADIUS accounting messages.
Enter a Secret that will be shared between FortiConnect and the FortiGate.
Set Accounting Port to the RADIUS accounting port 1813.

On FortiConnect, go to Devices > RADIUS Accounting Servers and add your FortiGate a RADIUS accounting server.

Enter a Name and the Server IP Address of the FortiGate that matches the interface that listens to the RADIUS accounting messages.

Enter a Secret that will be shared between FortiConnect and the FortiGate.

Set Accounting Port to the RADIUS accounting port 1813.