kensan writes: Version 4.0 of the well-known opensource project Firewall Builder has been released. Firewall Builder is a firewall configuration management application. Quote from the website: 'This is a major upgrade. We have been testing the new version internally and in beta release for several months and we believe it is ready for production use. The new version comes with support for high availability firewall configurations, including heartbeat, vrrpd, keepalived, conntrackd on Linux, CARP and pfsync on OpenBSD and PIX failover configuration. It can generate configuration scripts to manage ip addresses, VLAN, bridge and bonding interfaces on the firewall. Drop-in support for OpenWRT firewall script is now available, as well as experimental integration with IPCOP firewall appliances. The GUI has supports undo/redo of unlimited depth and was generally streamlined and has many other improvements.'