Allow anonymous SID/Name translation - Setting via registry instead of the Local Security Policy (or GPO)

I have a Windows 2008 R2 server and I am building a script to set a bunch of security settings via the registry.

I am stuck on one.

I am trying to set: Network Access - Allow anonymous SID/Name translation to 'Disabled' via the registry, I know this can be done through the local security policy or via a GPO but that is not what I am interested in. I want to do it making changes to the registry.

I found some people saying this can be done at:

HKLM\System\CurrentControlSet\Control\Lsa\TurnOffAnonymousBlock

However, when I browse to the registry this TurnOffAnonymousBlock registry key does not exist. Even if I set the policy to enabled or disabled manually in the local security policy. The key doesn't exist. This leads me to believe this is not the correct registry key that controls this setting.

Can anyone shed light what the appropriate key is in the registry?