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