src/etc/pf.conf - diff

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version 1.9, 2002/12/13 10:20:25

version 1.10, 2002/12/19 00:06:29

Line 9

external_addr="192.168.1.1"

# Normalize: reassemble fragments and resolve or reduce traffic ambiguities

# scrub in all

#scrub in all

# nat: packets going out through $ext_if with source address $internal_net will get

# translated as coming from $external_addr, a state is created for such packets,

# and incoming packets will be redirected to the internal address.

#nat on $ext_if from $internal_net to any -> $external_addr

# nat on $ext_if from $internal_net to any -> $external_addr

# rdr: packets coming in on $ext_if with destination $external_addr:1234 will

# be redirected to 10.1.1.1:5678. A state is created for such packets, and

# outgoing packets will be translated as coming from the external address.

#rdr on $ext_if proto tcp from any to $external_addr/32 port 1234 -> 10.1.1.1 port 5678

# rdr on $ext_if proto tcp from any to $external_addr/32 port 1234 -> 10.1.1.1 port 5678

# filter rules

# the implicit first two rules are

# pass in all

#pass in all

# pass out all

#pass out all

# block all incoming packets but allow ssh, pass all outgoing tcp and udp

# connections and keep state

# connections and keep state, logging blocked packets

# log blocked packets

#block in log all

#pass in on $ext_if proto tcp from any to $ext_if port 22 keep state

#pass out on $ext_if proto { tcp, udp } all keep state

# block in log all

# anchor to attach spews rules, which will redirect to spewsd(8)

# pass in on $ext_if proto tcp from any to $ext_if port 22 keep state

#rdr-anchor spews inet proto tcp from any to any port = smtp

# pass out on $ext_if proto { tcp, udp } all keep state