=====Secure Server build===== ====Require a wheel group for root access==== Edit the file **/etc/pam.d/su** Add, uncomment, or correct the line: auth required pam_wheel.so use_uid Edit **/etc/group** and add the following line wheel:x:10:root, Edit the file **/etc/sudoers**. Add, uncomment, or correct the line: %wheel ALL=(ALL) ALL