3 block return-rst proto tcp
11 pass in from any to any
12 pass out from any to any
15 block on lo0 from any to any
16 pass proto tcp flags S/SA
17 pass proto udp keep state
18 pass in proto udp all keep state
19 pass out proto udp from any to any keep state
20 pass out on lo0 proto tcp from any to any port 25 keep state