Kerberos user logon restrictions must be enforced.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-73359	WN16-DC-000020	SV-88011r1_rule		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 that access to target resources is not circumvented. Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058

STIG	Date
Windows Server 2016 Security Technical Implementation Guide	2018-09-05

Details

Check Text ( C-73433r1_chk )
This applies to domain controllers. It is NA for other systems. 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-73433r1_chk )

This applies to domain controllers. It is NA for other systems.

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-79801r1_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".