1 pass in proto tcp from any to any port = 25 flags S/SA keep frags 2 block in proto tcp from any to any port = 25 flags S/SA keep frags 3 pass in proto udp from any to any port = 53 keep frags 4 block in proto udp from any to any port = 53 keep frags 5 pass in proto tcp from any to any port = 25 flags S/SA keep state keep frags 6 block in proto tcp from any to any port = 25 flags S/SA keep state keep frags 7 pass in proto udp from any to any port = 53 keep frags(strict) 8 pass in proto tcp from any to any port = 25 keep state(strict) 9 pass in proto tcp from any to any port = 25 keep state(loose) 10