windows 2003 authentication

        Protocol
        Used For
        Kerberos version 5
        Network authentication. Provides mutual authentication between user and resource.
        Secure Socket Layer/Transport Layer Security (SSL/TLS)
        Network authentication. Based on X.509 public-key certificates.
        Microsoft Windows NT LAN Manager (NTLM)
        Network authentication. Used for Microsoft Windows NT 4 compatibility.
        Microsoft Challenge Handshake Authentication Protocol version 2 (MS-CHAP v2)
        Network and dial-up authentication. Uses separate encryption keys for sending and receiving.
        Extensible Authentication Protocol (EAP)
        Network and dial-up authentication. Provides support for additional authentication schemes, including smart cards.
        Password Authentication Protocol (PAP)
        Network and dial-up authentication. Sends passwords in clear text.
        Extensible Authentication Protocol-Transport Level Security (EAP-TLS)
        Provides authentication for wireless connections