File Server

SMB:Server Message Block A protocol used for share permissions on a folder can not restrict file level access.(Shared Permissions )

NTFS :New Technology File sytem  we can restrict or block inheritance  of permissions with NTFS permissions for folders AND Files for really specific control of who gets to do what inside a shared folder.

Step1: GO to File or FOlder
Step2:Properties,Security
Step3:Advanced
Step4:uncheck inheritance permissions
Step: Add your NTFS names and groups you want finish.
Effective permission in Advanced tab will help to check NTFS permission.

SMB Share level permissions work only at the folder level .
NTFS permissions work at the Folder AND at the File Level.
Documents inside the Shared Folder inherit the Permissions (share level or NTFS) unless you stop
the inheritance directly and apply new permissions.
Moving the folder in shared or NTFS permission will raffle all the permissions.