Configuring FortiAuthenticator as a RADIUS server in FortiGate

To configure the FortiGate authentication settings:

1. Go to User & Authentication > RADIUS Servers, and click Create New.
2. Enter a Name for the RADIUS server.
3. For Authentication method, select Specify, then select PAP from the dropdown.
4. Enter the IP address of the RADIUS server.
5. Enter the shared Secret key, and click OK.

   The secret is the same as the one used when setting up the RADIUS client, here, FortiGate.

6. Click Test Connectivity to test the connection to the server, and ensure that the connection status is Successful.
7. Click OK to save changes.