Guarddog is described as 'Firewall configuration utility for Linux systems. Guarddog is aimed at two groups of users. Novice to intermediate users who are not experts in TCP/IP networking and security, and those users who don't want the hastle of dealing with cryptic shell scripts and' and is a Firewall in the security & privacy category. There are more than 10 alternatives to Guarddog for a variety of platforms, including Windows, Linux, Android, iPhone and KDE Plasma apps. The best Guarddog alternative is TinyWall, which is both free and Open Source. Other great apps like Guarddog are OpenSnitch, Gufw, ZoneAlarm Firewall and Karma Firewall.