AFS ACLs
One significant difference in the way that AFS works compared to Unix/NFS is in the use of file permissions. AFS uses Access Control Lists (ACLs), and these apply to directories. All files within a directory share the same access control permissions. Be aware that moving a file from one location to another may change its access permissions - it will inherit the permissions of the directory into which it is moved. New directories inherit the ACLs of their parent directory.