Domain Local Global And Universal Groups
Stored on the local sam local computer use for security settings that apply just to this one machine.
Domain local global and universal groups. Global groups cannot be nested across domains. Because of its limited scope however members can only be assigned permissions within the domain in which this group is created. These groups can only be used by systems in the same domain. Permissions can be assigned in any domain.
Domain local groups accept user accounts from any domain. The scope of a group determines from where in the network you can assign permissions to the group. Domain local group memberships are not limited as users can add members as user accounts and universal and global groups from any domain. Nesting cannot be done in a domain local group.
A domain local group will not be a member of another domain local or any other groups in the same domain. The group is authorized to make schema changes in active directory. During a disaster recovery exercise. Universal groups accept user computer accounts from any domain.
In addition the scope can both contain and be a member of domain local groups from the same domain. Members must be in the same domain as the group. Members from any domain may be added to a domain local group. It is a universal group if the domain is in native mode.
Likewise domain local groups that describe resource permissions or user rights should contain only global groups that represent business roles. By default the only member of the group is the administrator account for the forest root domain. Domain local global and universal are group scopes which allow you to use groups in different ways to assign permissions. The domain local scope can contain user accounts universal groups and global groups from any domain.
Members can be from any domain in the forest. Use domain global groups to organize users who share similar access requirements and make them member of the domain local groups you use to grant access to resources. With domain universal groups permissions can be assigned to resources in any domain. Domain global groups can be a member of domain local groups and domain universal groups in any domain.
A global group can also be nested. Domain local groups may contain accounts global groups and universal groups from any domain as well as domain local groups from the same domain. Global groups that represent business roles should contain only user or computer accounts. It is a global group if the domain is in mixed mode.
Global groups can grant access to anything including files folders in any domain. The difference between domain local and global groups is that user accounts global groups and universal groups from any domain can be added to a domain local group.