[Angry Demon]

zai
Я бы воспользовался Windows Server 2003 Access-based Enumeration.

Access-based Enumeration is a new feature included with Windows Server 2003 Service Pack 1. This feature allows users of Windows Server 2003–based file servers to list only the files and folders to which they have access when browsing content on the file server. This eliminates user confusion that can be caused when users connect to a file server and encounter a large number of files and folders that they cannot access. What does Access-based Enumeration do? Access-based Enumeration filters the list of available files and folders on a server to include only those that the requesting user has access to. Who does this feature apply to? This feature applies to: • Domain-joined computers. • IT professionals who want to control the user’s experience.