Lockout is a tool that imposes discipline on you so that you get some work done. For example, lockout can be used to install a firewall that does not let you browse the Web. Lockout changes the root password for a specified duration; this prevents you from secretly ripping down the firewall and then browsing the Web anyway. In case of an emergency, you can reboot your computer to undo the effects of lockout and to restore the original root password.