The Kerberos policy option Maximum lifetime for user ticket renewal must be configured for a maximum of 7 days or less.

From Windows 2008 Domain Controller Security Technical Implementation Guide

Part of Kerberos-User Ticket Renewal

Associated with IA controls: ECSC-1

SV-28501r1_rule The Kerberos policy option Maximum lifetime for user ticket renewal must be configured for a maximum of 7 days or less.

Vulnerability discussion

This setting determines the period of time (in days) during which a users ticket-granting ticket (TGT) may be renewed.

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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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