The Kerberos user ticket renewal maximum lifetime must be limited to 7 days or less.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-2379	AD.4032_2008_R2	SV-36182r2_rule		Medium

Description
This setting determines the period of time (in days) during which a user's Ticket Granting Ticket (TGT) may be renewed. This security configuration limits the amount of time an attacker has to crack the TGT and gain access.

STIG	Date
Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide	2017-04-28

Details

Check Text ( None )
None

Fix Text (F-76929r1_fix)
Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> "Maximum lifetime for user ticket renewal" to "7" days or less.