The authentication method is configured in /etc/raddb/eap.conf. The authentication method used by FreeRADIUS is the PEAP (Protected EAP) method. To activate PEAP, a TLS tunnel is required to encrypt communication between supplicant and RADIUS (Remote Authentication Dial In User Service) server. This means that server certificates are required.
peap { default_eap_type = mschapv2 } tls { private_key_password = whatever private_key_file = ${raddbdir}/certs/cert-srv.pem certificate_file = ${raddbdir}/certs/cert-srv.pem CA_file = ${raddbdir}/certs/demoCA/cacert.pem dh_file = ${raddbdir}/certs/dh random_file = ${raddbdir}/certs/random fragment_size = 1024 include_length = yes }