Access Control List

ACL is a list of Access Control Entries that specify access and auditing information used by Windows NT on an New Technology File System (NTFS) hard drive. Windows NT uses the lists to determine which users have been granted access to specific resources (files and folders), and which rights a user may exercise, such as read, write, and execute. The ACLs for a file or folder can be viewed by right-clicking the resource, choosing Properties, and selecting the Permissions button on the Securities tab.