Snort2Pf is a small Perl daemon which greps Snort's alertfile and blocks the "naughty" hosts for a given amount of time using pfctl.
this firewall is a union of lot of tool distributed free for the OS NetBSD, OpenBSD and FreeBSD, use web services with xml-rpc and soap, and a desktop too based on Gtk
DaemonWall is an OpenBSD-based network security live CD which can act as an Internet firewall/gateway.
Mini OpenBSD Router/Firewall/Gateway with openssh, altqd, pfctl (firewall+nat), routed, snmpd, oidentd, simple shell menu config,multi user & wireless support. Fit on 8MB flashdisk & 24 MB ram.
A port of MandrakeSoft's "Network Appliance Administration Tool" to OpenBSD.
A Bourne shell script that monitors the OpenBSD packet filter firewall and provides a summary in HTML form.
OpenUTM is an open source Unified Threat Management software framework to be used to combine together other open source projects to build an easily managed UTM firewall appliance.