4.2 Access to Files and Folders Is Controlled by the File System

The NSS file system on OES and NetWare, the NTFS file system on Windows servers, and the SharePoint Document Libraries on SharePoint servers always control access to the files and folders they contain. Users seeking access through a file browser, such as Windows explorer, must generally have the required permissions on the file system or document library to gain access.

This is absolutely true when accessing files and folders through Filr. You cannot gain more access through Filr than the underlying file system or document library allows.

Sharing through Filr is no exception. Obviously, users must have access to files and folders in order to share them, and they cannot grant a higher shared-access role than they have.