NetBSD/etc/pf.conf

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# $NetBSD: pf.conf,v 1.2 2004/06/22 15:35:38 itojun Exp $
# $OpenBSD: pf.conf,v 1.27 2004/03/02 20:13:55 cedric Exp $
#
# See pf.conf(5) and /usr/share/pf for syntax and examples.
#ext_if="ext0"
#int_if="int0"
#table <spamd> persist
#table <spamd-white> persist
#scrub in
#nat on $ext_if from !($ext_if) -> ($ext_if:0)
#rdr pass on $int_if proto tcp to port ftp -> 127.0.0.1 port 8021
#rdr pass on $ext_if proto tcp from <spamd> to port smtp \
# -> 127.0.0.1 port spamd
#rdr pass on $ext_if proto tcp from !<spamd-white> to port smtp \
# -> 127.0.0.1 port spamd
#block in
#pass out keep state
#pass quick on { lo $int_if }
#antispoof quick for { lo $int_if }
#pass in on $ext_if proto tcp to ($ext_if) port ssh keep state
#pass in on $ext_if proto tcp to ($ext_if) port > 49151 user proxy keep state
#pass in log on $ext_if proto tcp to ($ext_if) port smtp keep state
#pass out log on $ext_if proto tcp from ($ext_if) to port smtp keep state