FortKnox Firewall is described as 'Is personal firewall solution that allows you to protect a PC against hacker attacks, trojans, spyware and internet threats. It has built-in Intrusion Prevention System and SPI technologies for extended user protection' and is a Firewall in the security & privacy category. There are more than 10 alternatives to FortKnox Firewall for a variety of platforms, including Windows, Linux, Android, iPhone and KDE Plasma apps. The best FortKnox Firewall alternative is TinyWall, which is both free and Open Source. Other great apps like FortKnox Firewall are Gufw, Windows Firewall Notifier, Privatefirewall and ZoneAlarm Firewall.