1pass in proto tcp from any port > 1024 to any port = 25 with not short 2pass in proto tcp from any port > 1024 to any port = 25 3block in proto tcp from any to any with short 4block in proto tcp from any to any with frag 5pass in proto udp from any port = 53 to any port = 53 6block in proto udp from any port = 53 to any port = 53 with not short 7