D.1 Kerberos Terms

The following table lists some of the terms that you need to understand as you set up the Novell Kerberos KDC.

Table D-1 Important Kerberos Terms

Kerberos Term

Definition

Key (also referred to as Secret Key)

An encryption key shared by a principal and the KDC, distributed outside the system, with a long lifetime. In the case of a user’s principal, the key is derived from a password.

Principal

An entity in the network. Each entity corresponds to a principal.

Realm

A logical grouping of principals.

Service

A resource provided to network clients, such as a server holding a ZENworks policy or an application.

Service ticket

A record required to access services in the network.

Session key

A temporary encryption key used between two principals, with a lifetime limited to the duration of a single login session.

Ticket

A record that helps a client authenticate itself to a server. It contains information such as client's identity, a session key, a timestamp, and other information---all sealed using the server's secret key.

Ticket Granting Ticket (TGT)

The initial ticket obtained after a successful login. This ticket is used to get the service ticket to access a service.