Administration

Attributes Tab (Principal Information window)

The Lock Principal attribute applies to both user and service principals. If this attribute is set for a user principals. If this attribute is set for a user principal, no tickets can be issued to the user. If this attribute is set for a service principal, no tickets are issues for it.

The Lock attribute becomes set when a principal exceeds the maximum number of failed authentication attempts allowable by the password policy file. The default maximum level allowed for failed authentication attempts is five (5). If a principal is locked, an administrative user must unlock the principal before the user can authenticate again.

Allow As Service Attribute The Allow As Service attribute specifies whether a Principal is allowed to act as a service. Set this attribute to allow a principal to act as a service (that is, the principal’s name is in the server field of the service ticket). This attribute should be selected for any principal that is used as a service principal.

The Allow As Service Attribute can be applied to all principals, not just principals that act solely as service principals. The attribute is selected by default.

NOTE

User principals need to have this attribute set when

 

using user-to-user authentication.

 

 

Require Initial Authentication Attribute The Require Initial Authenticaton attribute specifies whether the server is allowed to issue service to the service principal on behalf of a user principal using a previously obtained TGT.

If this attribute is set for the service principal, a user principal is required to go through initial authentication, i.e., required to authenticate to the server again, to obtain a ticket for that service. For example, the Change Password service requires that a principal enter a password to receive a ticket for the

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Chapter 6