Chapter 5. SecurityThis chapter contains the following topics:• “Locking the computer” on page 53• “Viewing and changing security settings in the Setup Utility program” on page 54• “Preventing unauthorized access to the computer” on page 54• “Using and understanding firewalls” on page 55• “Protecting data against viruses” on page 55Locking the computerThis section provides information about locking the computer with the locking devices to keep the computersafe.Locking the computer coverLocking the computer cover helps prevent unauthorized people from gaining access to the inside of yourcomputer. Your computer comes with a padlock loop so that the computer cover cannot be removedwhen a padlock is installed.Figure7. Installing a padlock© Copyright Lenovo 2015, 2016 53