Hi all, The FreeRADIUS server is working fine with eduroam. But showing the following error message for our local users while connecting with google ldap in debug mode *(108) eap_ttls: ERROR: TLS Alert read:fatal:unknown CA(108) eap_ttls: ERROR: TLS_accept: Failed in error(108) eap_ttls: ERROR: Failed in __FUNCTION__ (SSL_read)(108) eap_ttls: ERROR: error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca(108) eap_ttls: ERROR: error:140940E5:SSL routines:ssl3_read_bytes:ssl handshake failure(108) eap_ttls: ERROR: System call (I/O) error (-1)(108) eap_ttls: ERROR: TLS receive handshake failed during operation(108) eap_ttls: ERROR: [eaptls process] = fail(108) eap: ERROR: Failed continuing EAP TTLS (21) session. EAP sub-module failed* Can any of you please help me to resolve this? Thanks in advance Regards Thirunavukkarasu