How to perform loadbalancing with a set of three tools on OpenBSD. The article describes the configuration of the tools for loadbalancing and failover.
Firewall Builder (also known as fwbuilder) is a GUI firewall configuration and management tool that supports iptables (netfilter), ipfilter, pf, ipfw, Cisco PIX (FWSM, ASA) and Cisco routers extended access lists. The article has many screenshots for the reader to see how Firewall Builder configures a firewall.