Kerberos user logon restrictions must be enforced.

From Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide

Part of Kerberos-User Logon Restrictions

Associated with IA controls: ECSC-1

Associated with: CCI-000366

SV-51160r2_rule Kerberos user logon restrictions must be enforced.

Vulnerability discussion

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.

Check content

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

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".

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.