1# $NetBSD: example.8,v 1.1.1.1 2012/03/23 21:20:15 christos Exp $ 2# 3# block all incoming TCP connections but send back a TCP-RST for ones to 4# the ident port 5# 6block in proto tcp from any to any flags S/SA 7block return-rst in quick proto tcp from any to any port = 113 flags S/SA 8# 9# block all inbound UDP packets and send back an ICMP error. 10# 11block return-icmp in proto udp from any to any 12