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Maximum lifetime for user ticket renewal

Applies To: Windows Server 2008, Windows Server 2008 R2

This security policy reference topic for the IT professional describes the best practices, location, values, and security considerations for this policy setting.

Reference

The Maximum lifetime for user ticket renewal policy setting determines the period of time (in days) during which a user’s ticket-granting ticket can be renewed.

The possible values for this Group Policy setting are:

  • A user-defined number of days from 0 through 99,999

  • Not defined

Best practices

  1. If the value for this policy setting is too high, users may be able to renew very old user ticket-granting tickets. If the value is 0, ticket-granting tickets never expire.

    It is advisable to set Maximum lifetime for user ticket renewal to 7 days.

Location

GPO_name\Computer Configuration\Windows Settings\Security Settings\Account Policies\Kerberos Policy\

Default values

Server type or GPO Default value

Default Domain Policy

7 days

Default Domain Controller Policy

Not defined

Stand-Alone Server Default Settings

Not applicable

DC Effective Default Settings

7 days

Member Server Effective Default Settings

Not applicable

Client Computer Effective Default Settings

Not applicable

Operating system version differences

There are no differences in this policy for Windows versions beginning with Windows Server 2003.

Security considerations

This section describes how an attacker might exploit a feature or its configuration, how to implement the countermeasure, and the possible negative consequences of countermeasure implementation.

Vulnerability

If the value for the Maximum lifetime for user ticket renewal setting is too high, users might be able to renew very old user tickets.

Countermeasure

Configure the Maximum lifetime for user ticket renewal setting to 7 days.

Potential impact

None. This is the default configuration.