Maximum lifetime for user ticket renewal

Active Directory Auditing Tool

The Who, Where and When information is very important for an administrator to have complete knowledge of all activities that occur on their Active Directory. This helps them identify any desired / undesired activity happening. ADAudit Plus assists an administrator with this information in the form of reports. In real-time, ensure critical resources in the network like the Domain Controllers are audited, monitored and reported with the entire information on AD objects - Users, Groups, GPO, Computer, OU, DNS, AD Schema and Configuration changes with 200+ detailed event specific GUI reports and email alerts.

Object Access » Maximum lifetime for user ticket renewal

A brief look at configuring maximum lifetime for user ticket renewal policy

The Maximum lifetime for user ticket renewal policy setting determines the time, expressed in days, during which a ticket-granting ticket can be renewed through a request to the Key Distribution Center (KDC).

This policy setting can take values from 0 through 99,999, and can be defined by the user. You can also leave this setting undefined.

Security concerns

If you set high value for this policy, users will be able to use their ticket-granting-tickets (TGTs) for a longer time. This will create a security loophole because hackers will misuse these TGTs to gain access to network resources bypassing credential authentication. Similarly, if a low value, say 0 is set for this policy, then the TGTs don't expire leading to same vulnerability.

Therefore, Microsoft recommends you to set the value for this policy as 7 days. This is the default configuration. A value less than this will lead to frequent authentication requests to the KDC.

Enabling this policy setting using GPO.

By default, the client devices receive the changed or new setting during the next successful Group Policy refresh. However, to immediately make the changes effective, you can execute gpupdate/force command. Upon execution of this command on the local device, the Security Configuration Engine will synchronize to the new setting within next five minutes.

About ADAudit Plus:

ADAudit Plus is a real time change auditing software that helps keep your Active Directory, Azure AD, Windows file servers, NetApp filers, EMC file systems, Synology file systems, Windows member servers, and workstations secure and compliant. With ADAudit Plus, you can get visibility into:

  • Authorized and unauthorized AD management changes
  • User logons, logoffs, and account lockouts
  • GPO changes
  • Group attribute and membership changes
  • OU changes
  • Privileged access and permission changes
  • Azure AD logons, and changes to roles, groups, and applications
  • PowerShell scripts and modules

among other things.

There are more than 200 event-specific reports, and you can configure instant email alerts. You can also export the reports to XLS, HTML, PDF and CSV formats to assist in interpretation and forensics. For more information on ADAudit Plus, visit: https://www.manageengine.com/active-directory-audit/.

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