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