NetBSD-5.0.2/dist/ipf/rules/example.1

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#	$NetBSD: example.1,v 1.1 1999/12/11 22:24:11 veego Exp $
#
# block all incoming TCP packets on le0 from host 10.1.1.1 to any destination.
#
block in on le0 proto tcp from 10.1.1.1/32 to any