Synopsis: handbook external referenced site is now 404 State-Changed-From-To: open->closed State-Changed-By: blackend State-Changed-When: Thu Jan 3 09:35:00 UTC 2013 State-Changed-Why: Fixed with http://www.munk.me.uk/ipf/ipf-howto.html. Thanks. http://www.freebsd.org/cgi/query-pr.cgi?pr=174912