Basit firewall örneğindeki yapıyı aynen burada statefull mimari ile uygulayacağız.
---- /etc/ipfw.conf ---- -f flush add allow ip from any to any via lo0 add deny ip from any to 127.0.0.0/8 add check-state add allow udp from any to any 53 keep-state add deny ip from any to any established add allow tcp from any to any 25,80,110 setup keep-state add deny ip from any to any ------------------------