ipfw's popular, well supported, and not going anywhere. It's still the default FreeBSD firewall[1], PC-BSD recently switched their default to it[2], and Dragon

ipfw's popular, well supported, and not going anywhere. It's still the default FreeBSD firewall[1], PC-BSD recently switched their default to it[2], and DragonFlyBSD recently rewrote it[3]. 1: https://svnweb.freebsd.org/base/head/etc/rc.firewall?view=markup https://svnweb.freebsd.org/base/head/etc/rc.firewall?view=ma... 2: https://forums.pcbsd.org/showthread.php?tid=19683 https://forums.pcbsd.org/showthread.php?tid=19683 3: http://www.dragonflybsd.org/docs/ipfw2/ http://www.dragonflybsd.org/docs/ipfw2/