Hi ALL!!!!!!!!!!!!!!!!!!!!!!! I did more then 20 openssl commands in order to issue a CA for tests... Howto in http://www.linuxjournal.com/node/8095/print and http://www.linuxjournal.com/node/8151/print. I DID ALL THE COMMANDS!!! XP client do not authenticate :-( Do I need users file??? What the correct sintaxe for login guaraldi and password mudar123? I defined users file like: guaraldi Auth-Type := EAP, Cleartext-Password == "mudar123" CA defined in OPENSSL!!! Radius server stop displaying "can not get issuer certificate" and "unknow CA" Server certificate signed!!! Client certificate defined!!! XP with cacert.pem and client_cert.p12!!!!!!!!!!!! I did not use ca.der .... XP Config with EAP to Smartcard or other certificates TLS and so on... AP with WPA/TKIP with 802.1x to 192.168.0.254 port 1812. OK!!! It works... Why XP do not authenticate with radius??? Guaraldi