What is ACL command? An access control list (ACL) consists of one or more access control entries (ACEs) that collectively define the network traffic profile. This profile can then be referenced by Cisco IOS XR Software software features such as traffic filtering, priority or custom queueing, and dynamic access control.
What are ACL permissions? An ACL is a list of permissions that are associated with a directory or file. It defines which users are allowed to access a particular directory or file. An access control entry in the ACL defines the permissions for a user or a group of users.
Where these ACLs are stored? ACLs are stored in the part of an NTFS partition that does all the background plumbing – the MFT (Master File Table). The ACL does not follow a file around, since it is not a part of the file (just like the filename it is metadata). The file can cross partition type boundaries (NTFS->FAT), the ACL cannot.
What is ACL mask in Linux? The ACL mask. The mask entry indicates the maximum permissions allowed for users (other than the owner) and for groups. The mask is a quick way to change permissions on all the users and groups.