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Annotation of src/share/ipf/nat.3, Revision 1.1

1.1     ! kjell       1: #!/sbin/ipnat -f -
        !             2: #
        !             3: # THIS EXAMPLE IS WRITTEN FOR IP FILTER 3.3
        !             4: #
        !             5: # ppp0 - (external) PPP connection to ISP, address a.b.c.d/32
        !             6: #
        !             7: # ed0 - (internal) network interface, address w.x.y.z/32
        !             8: #
        !             9: # If we have only 1 valid IP address from our ISP, then we do this:
        !            10: #
        !            11: map ppp0 w.x.y.z/24 -> a.b.c.d/32 portmap tcp/udp 40000:60000
        !            12: map ppp0 w.x.y.z/24 -> a.b.c.d/32
        !            13: #
        !            14: # if we get a different dialup IP address each time, then we would use:
        !            15: #
        !            16: #map ppp0 w.x.y.z/24 -> 0/32 portmap tcp/udp 40000:60000
        !            17: #map ppp0 w.x.y.z/24 -> 0/32
        !            18: #
        !            19: # If we have a class C address space of valid IP#'s from our ISP, then we can
        !            20: # do this:
        !            21: #
        !            22: #map ppp0 w.x.y.z/24 -> a.b.c.d/24 portmap tcp/udp 40000:60000
        !            23: #map ppp0 w.x.y.z/24 -> a.b.c.d/24
        !            24: #
        !            25: # or, if we only have a small number of PC's, this:
        !            26: #
        !            27: #map ppp0 w.x.y.v/32 -> a.b.c.E/32 portmap tcp/udp 40000:60000
        !            28: #map ppp0 w.x.y.v/32 -> a.b.c.E/32
        !            29: #map ppp0 w.x.y.u/32 -> a.b.c.F/32 portmap tcp/udp 40000:60000
        !            30: #map ppp0 w.x.y.u/32 -> a.b.c.F/32
        !            31: #map ppp0 w.x.y.t/32 -> a.b.c.G/32 portmap tcp/udp 40000:60000
        !            32: #map ppp0 w.x.y.t/32 -> a.b.c.G/32
        !            33: #map ppp0 w.x.y.s/32 -> a.b.c.H/32 portmap tcp/udp 40000:60000
        !            34: #map ppp0 w.x.y.s/32 -> a.b.c.H/32
        !            35: #map ppp0 w.x.y.r/32 -> a.b.c.I/32 portmap tcp/udp 40000:60000
        !            36: #map ppp0 w.x.y.r/32 -> a.b.c.I/32
        !            37: #map ppp0 w.x.y.q/32 -> a.b.c.J/32 portmap tcp/udp 40000:60000
        !            38: #map ppp0 w.x.y.q/32 -> a.b.c.J/32
        !            39: #map ppp0 w.x.y.p/32 -> a.b.c.K/32 portmap tcp/udp 40000:60000
        !            40: #map ppp0 w.x.y.p/32 -> a.b.c.K/32
        !            41: #
        !            42: # To make ftp work, using the internal ftp proxy, use:
        !            43: #
        !            44: map ppp0 w.x.y.z/24 -> a.b.c.d/32 proxy port ftp ftp/tcp
        !            45: #