FirewallFabrik

FirewallFabrik is a modern successor to Firewall Builder (fwbuilder), preserving its core design philosophy while updating it for current firewall technologies. It is a Qt-based GUI that manages firewall policies for iptables and nftables from a single unified interface.

All objects, rules, and device definitions are stored in a centralized policy database, allowing consistent reuse of services, networks, and rule sets across devices. This architecture scales from a handful of devices to hundreds of firewalls, all managed from one policy file and one UI, with platform-specific configuration generated automatically as deployment-ready shell scripts.

FirewallFabrik can import existing Firewall Builder (.fwb) files, includes compilers for iptables and nftables, and ships a built-in installer to deploy generated rule sets to remote firewalls over SSH.