The Kerberos policy user ticket renewal maximum lifetime must meet minimum standards.

From Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide

Associated with IA controls: ECSC-1

SV-36182r1_rule The Kerberos policy user ticket renewal maximum lifetime must meet minimum standards.

Vulnerability discussion

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

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Configure the Kerberos policy option "Maximum lifetime for user ticket renewal" to a maximum of 7 days or less.

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