Kerberos user logon restrictions must be enforced.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-2376	WN12-AC-000010-DC	SV-51160r2_rule	ECSC-1	Medium

Description
This policy setting determines whether the Kerberos Key Distribution Center (KDC) validates every request for a session ticket against the user rights policy of the target computer. The policy is enabled by default which is the most secure setting for validating access to target resources is not circumvented.

STIG	Date
Windows Server 2012 / 2012 R2 Domain Controller Security Technical Implementation Guide	2014-12-18

Details

Check Text ( C-46590r1_chk )
Verify the following is configured in the Default Domain Policy. Open "Group Policy Management". Navigate to "Group Policy Objects" in the Domain being reviewed (Forest > Domains > Domain). Right click on the "Default Domain Policy". Select Edit. Navigate to Computer Configuration > Policies > Windows Settings > Security Settings > Account Policies > Kerberos Policy. If the "Enforce user logon restrictions" is not set to "Enabled", this is a finding.

Check Text ( C-46590r1_chk )

Verify the following is configured in the Default Domain Policy.

Open "Group Policy Management".
Navigate to "Group Policy Objects" in the Domain being reviewed (Forest > Domains > Domain).
Right click on the "Default Domain Policy".
Select Edit.
Navigate to Computer Configuration > Policies > Windows Settings > Security Settings > Account Policies > Kerberos Policy.

If the "Enforce user logon restrictions" is not set to "Enabled", this is a finding.

Fix Text (F-44317r1_fix)
Configure the policy value in the Default Domain Policy for Computer Configuration -> Policies -> Windows Settings -> Security Settings -> Account Policies -> Kerberos Policy -> "Enforce user logon restrictions" to "Enabled".