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4.6 Inheritance

The Windows authorization model supports a concept of inheritance by which new objects can inherit one or more ACEs from their parent container. In practice, this allows an administrator to establish default security on, for example, a directory, and all new files that are created in that directory receive a preset ACL. Although the owner of the file can still override that ACL and establish its own, if nothing is done (through the premise of discretionary access control), the default is as the administrator wants.

One attribute that can be applied to ACEs is the Object-Inherit flag. This flag indicates that when a new object is created, this ACE should be carried forward to the security descriptor of the new object. An additional flag, Container-Inherit, indicates that new containers created under this container should receive this ACE. For the file system, this allows different default ACLs for directories as opposed to files.

 
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