Online Armor Free is a free and unfortunately the poorest edition of the popular firewall, which, despite its limited functionality, offers quite a good level of protection. It includes a standard firewall module (the paid modules are also available in anti-virus, anti-spyware, etc.), which protects the system kernel against attacks, monitors the running applications in real time and their changes in the system, and protects the computer against all kinds of keyloggers, worms and malicious scripts. Unfortunately, Online Armor Free lacked a useful auto-update function.