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Annotation of src/etc/pf.conf, Revision 1.4

1.4     ! henning     1: #      $OpenBSD$
1.1       kjell       2: #
1.2       smart       3: # See pf.conf(5) for syntax and examples
1.4     ! henning     4: #
        !             5: # replace ext0 with external interface name, 10.0.0.0/8 with internal network
        !             6: # and 192.168.1.1 with external address
        !             7: #
        !             8: # nat: packets going out through ext0 with source address 10.0.0.0/8 will get
        !             9: # translated as coming from 192.168.1.1. a state is created for such packets,
        !            10: # and incoming packets will be redirected to the internal address.
        !            11:
        !            12: # nat on ext0 from 10.0.0.0/8 to any -> 192.168.1.1
        !            13:
        !            14: # rdr: packets coming in through ext0 with destination 192.168.1.1:1234 will
        !            15: # be redirected to 10.1.1.1:5678. a state is created for such packets, and
        !            16: # outgoing packets will be translated as coming from the external address.
1.1       kjell      17:
1.4     ! henning    18: # rdr on ext0 proto tcp from any to 192.168.1.1/32 port 1234 -> 10.1.1.1 port 5678
        !            19:
        !            20: # filter rules
        !            21: # the implicit first two rules are
1.1       kjell      22: # pass in all
                     23: # pass out all
1.4     ! henning    24:
        !            25: # block all incoming packets but allow ssh, pass all outgoing tcp and udp
        !            26: # connections and keep state
        !            27: # log blocked pakets
        !            28:
        !            29: # block in log all
        !            30: # pass  in  on ext0 proto tcp from any to ext0 port 22 keep state
        !            31: # pass  out on ext0 proto { tcp, udp } all keep state
        !            32: