Ticket-Granting Ticket

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What Does Ticket-Granting Ticket Mean?

A ticket-granting ticket (TGT) is a small data set used in Kerberos authentication, which was developed at MIT for authenticating server traffic.

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A ticket-granting ticket is also known as an authentication ticket.

Techopedia Explains Ticket-Granting Ticket

In a TGT model, the first tiny ticket or data set is issued in order to approve the beginning of authentication. An additional ticket goes to the server with client identity and other information. Like other tickets, the initial small ticket is also encrypted. In this ticket granting system, Kerberos uses some specific protocols. The client first sends the ticket-granting ticket as a request for server credentials to the server. The encrypted reply comes back with a key that is used for authentication purposes.

The client uses the TGT to “self-authenticate” with the ticket-granting server (TGS) for a secure session.

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Margaret Rouse
Senior Editor
Margaret Rouse
Senior Editor

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.