Hi All, I am trying to use authenticate one embedded WLAN device with using freeRadius server 2.0.4 I have radiusd.conf,client.conf files as per my configuration. I have created certificates using bootstrap script.Values in ca.cnf,client.cnf and server.cnf have been modified accordingly. I have copied ca.pem, client.pem to device filesystem.Private key has been extracted from client.pem. Since last week I am trying to authenticate freeradius server but I am getting error like "Unknown CA". Please see attached radius logs. When I verify client certificate using "openssl verify -CApath ca.pem client.pem" I see following error: Error 20 at depth 0 lookup : unable to get local issuer certificate. Device is already tested with Windows 2003 server's TLS(of course with different set of certificates :<) ) and it is working fine. What will be possible reason behind this and where am I going wrong? Appreciate your help. Thanks and Regards, Avinash.