Ticket Granting Ticket

For the R&B group, see TGT (group).

In some computer security systems, a Ticket Granting Ticket or Ticket to Get Tickets (TGT) is a small, encrypted identification file with a limited validity period. After authentication, this file is granted to a user for data traffic protection by the key distribution center (KDC) subsystem of authentication services such as Kerberos. The TGT file contains the session key, its expiration date, and the user's IP address, which protects the user from man-in-the-middle attacks. The TGT is used to obtain a service ticket from Ticket Granting Service (TGS). User is granted access to network services only after this service ticket is provided.^[1]

↑ "Kerberos Explained". Retrieved 7 July 2014.

Authentication

Authentication APIs	BSD Authentication (BSD Auth) Common Data Security Architecture (CDSA) eAuthentication Generic Security Services API (GSSAPI) Java Authentication and Authorization Service (JAAS) Novell Modular Authentication Service (NMAS) OAuth OpenID OpenID Connect (OIDC) Pluggable Authentication Modules (PAM) Simple Authentication and Security Layer (SASL) Security Support Provider Interface (SSPI) XCert Universal Database API (XUDA)

Authentication protocol	ACF2 AKA CAVE-based_authentication Challenge-Handshake Authentication Protocol (CHAP) MS-CHAP MS-CHAPv2 Central Authentication Service (CAS) CRAM-MD5 Diameter Extensible Authentication Protocol (EAP) Host Identity Protocol (HIP) Kerberos LAN Manager NT LAN Manager (NTLM) Password-authenticated key agreement protocols Password Authentication Protocol (PAP) Protected Extensible Authentication Protocol (PEAP) Remote Access Dial In User Service (RADIUS) Resource Access Control Facility (RACF) Secure Remote Password protocol (SRP) TACACS and TACACS+ RFID-Authentication Protocols Woo–Lam

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