ZoneAlarm Pro is a firewall software, which is easy to use. You only need to fill in your data during installation and restart it after installation. ZoneAlarm PRO Firewall will start automatically to help you perform tasks. You can freely set whether all programs are allowed to connect to the Internet and use this method to prevent some unknown software from sneaking on the Internet. The best way is to Lock the network to prevent any programs from passing through, and only the software you approved can pass through. You can also use it to see how many network resources you have used after booting up, and you can set the time to lock the network. You better use such easy-to-use software to feel its power.