NetBSD-5.0.2/dist/ipf/rules/example.2

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#	$NetBSD: example.2,v 1.1 1999/12/11 22:24:11 veego Exp $
#
# block all outgoing TCP packets on le0 from any host to port 23 of
# host 10.1.1.2
#
block out on le0 proto tcp from any to 10.1.1.3/32 port = 23