Usage 

The fp-fileprotector extension is managed from the File Protection backend module under Files.

After configuring a storage to be protected, the folder tree displays the protection status of each folder within that storage.

Every folder within a protected storage can have access rules that control which users may access the files within that folder.

Folder tree of a protected file storage

Folder tree of a protected file storage. Lock icons on folders indicate their protection status.

Folder icons are color-coded based on their accessibility:

Green Lock
Everyone can access the folder.
Orange Lock
Access is restricted by an access rule.
Red Lock
No one can access the folder (e.g. when the storage denies access by default and no access rule has been created).

You can also see whether a protection rule is defined directly on a folder or inherited from a parent folder:

Folder icon is a lock symbol
A specific access rule is defined for this folder.
Folder icon has a small lock badge
The access rule was inherited from a parent folder.