rpfcd (Remote packet filter control daemon) allows remote control and monitoring of OpenBSD's packet filter. It communicates with clients using the RPFC protocol running on top of SSL. The protocol is designed to be relatively forgiving and easy to use. Its goal is to provide a common framework for pf control and monitoring. Instead of running pfctl/tcpdump/pflogd, writing ad-hoc parsing scripts, and sending the results by mail, rpfcd will provide the same and much more via a transparent server-client interface. Together with a decent CLI/GUI client, pf firewall monitoring becomes rather easy. This is especially interesting if you have several pf firewalls to control and monitor.
