The domain must be configured to restrict privileged administrator accounts from logging on to lower-tier hosts.

If the domain is not configured to restrict privileged administrator accounts from logging on to lower-tier hosts, it would be impossible to isolate administrative accounts to specific trust zones and protect IT resources from threats from high-risk trust zones. Blocking logon to lower-tier assets helps protect IT resources in a tier from being attacked from a lower tier.

Verify domain systems are configured to prevent higher-tier administrative accounts from logging on to lower-tier hosts. This can be accomplished by adding the higher-tier administrative groups to the Deny log on user rights of the lower-tier system. These include the following user rights: Deny log on as a batch job Deny log on as a service Deny log on locally If domain systems are not configured to prevent higher-tier administrative accounts from logging on to lower-tier hosts, this is a finding. Domain and Enterprise Admins are currently required to be included in the appropriate deny user rights in the Windows STIGs for member servers and workstations. Note: Severity category exception - Upgrade to a CAT I finding if any Tier 0 administrative account used to manage high-value IT resources is able to log on to a lower-tier host.

Configure domain systems to prevent higher-tier administrative accounts from logging on to lower-tier hosts. Assign higher-tier administrative groups to the Deny log on user rights of lower-tier hosts. This includes the following user rights: Deny log on as a batch job Deny log on as a service Deny log on locally Domain and Enterprise Admins are currently required to be included in the appropriate deny user rights in the Windows STIGs for member servers and workstations.