1# $NetBSD: example.5,v 1.1.1.1 2012/03/23 21:20:15 christos Exp $ 2# 3# test ruleset 4# 5# allow packets coming from foo to bar through. 6# 7pass in from 10.1.1.2 to 10.2.1.1 8# 9# allow any TCP packets from the same subnet as foo is on through to host 10# 10.1.1.2 if they are destined for port 6667. 11# 12pass in proto tcp from 10.2.2.2/24 to 10.1.1.2/32 port = 6667 13# 14# allow in UDP packets which are NOT from port 53 and are destined for 15# localhost 16# 17pass in proto udp from 10.2.2.2 port != 53 to localhost 18# 19# block all ICMP unreachables. 20# 21block in proto icmp from any to any icmp-type unreach 22# 23# allow packets through which have a non-standard IP header length (ie there 24# are IP options such as source-routing present). 25# 26pass in from any to any with ipopts 27