OpenSolaris_b135/cmd/ipf/examples/example.13

#
# Log all short TCP packets to qe3, with 10.3.3.3 as the intended
# destination for the packet.
#
block in on qe0 to qe3:10.3.3.3 proto tcp all with short
#
# Log all connection attempts for TCP
#
pass in on le0 dup-to le1:10.3.3.3 proto tcp all flags S/SA
#
# Route all UDP packets through transparently.
#
pass in on ppp0 fastroute proto udp all
#
# Route all ICMP packets to network 10 out through le1, to 10.3.3.1
#
pass in on le0 to le1:10.3.3.1 proto icmp all