Friday, November 19, 2010 
<A target="_blank" href="http://post.oreilly.com/rd/9z1zhlm9p1i25kmodhj1rqm44mja5dg3k2f56opo4k8">This book, explaining the intricacies of managing firewall software using OpenBSD's PF</A>, has been updated and revised to cover the new syntax introduced in OpenBSD 4.7. The author also includes extensive support for using PF with FreeBSD and NetBSD.
