The security subsystem deals with security tokens, grants or denies access to user accounts based on resource permissions, handles login requests and initiates login authentication, and determines which system resources need to be audited by Windows NT.[citation needed] It also looks after Active Directory.[citation needed] The workstation service implements the network redirector, which is the client side of Windows file and print sharing; it implements local requests to remote files and printers by "redirecting" them to the appropriate servers on the network.[6] Conversely, the server service allows other computers on the network to access file shares and shared printers offered by the local system.[7]