Administering the Kerberos Server

Attributes Tab (Principal Information Window)

Table 8-12

Attributes Tab Components (Continued)

 

 

 

 

Components

Description

 

 

 

 

Require

Specifies if a principal is required to use

 

Preauthentication

preauthentication in the TGT request.

 

 

Preauthentication means that additional

 

 

known encrypted data is sent with the

 

 

ticket request, providing additional security

 

 

when the TGT is presented to gain access to

 

 

a secured service.

 

 

The Require Preauthentication attribute

 

 

applies to user and service principals. If this

 

 

attribute is set for a user principal, the user

 

 

is required run the logon software that

 

 

performs authentication using the

 

 

preauthentication protocol. If this attribute

 

 

is set for a service principal, the service

 

 

cannot accept TGTs from a user principal if

 

 

the user did not obtain a TGT using a

 

 

preauthentication protocol.

 

 

 

 

Require Password

Specifies that a principal must change its

 

Change

password during the next logon to the

 

 

Kerberos server. The Require Password

 

 

Change attribute applies to user principals.

 

 

When new principals are added to the

 

 

database or when the password of the

 

 

principal is changed, this attribute is

 

 

controlled by the NoReqChangePwd setting

 

 

in the password policy file of the principal.

 

 

By default, NoReqChangePwd is set to 0

 

 

(zero), meaning that users must change

 

 

their passwords during first logon.

 

 

 

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Chapter 8