1 pass in proto tcp from any port > 1024 to any port = 25 with not short
2 pass in proto tcp from any port > 1024 to any port = 25
3 block in proto tcp from any to any with short
4 block in proto tcp from any to any with frag
5 pass in proto udp from any port = 53 to any port = 53
6 block in proto udp from any port = 53 to any port = 53 with not short
projects / FreeBSD / releng / 10.2.git / blob