You can optionally change the RADIUS authentication, accounting SSO, and accounting monitor ports under Authentication > RADIUS Service > Services.
By default, the ports are set to:
- RADIUS authentication port: 1812
- RADIUS accounting SSO port: 1813
- RADIUS accounting monitor port: 1646
|When upgrading from a firmware version prior to 5.0, and the Enable RADIUS Accounting SSO clients option is enabled under Fortinet SSO Methods > SSO > General, both the SSO accounting port and the usage monitoring accounting port should remain at their default values (1813 and 1646 respectively) in order to avoid service disruption.|