Re: ipfwadm

[Giuseppe Vacanti <gv@deselby.xs4all.nl>]

I have a two PC network. One box is connected to the ISP via
diald/ppp. The second box talks to the first one through an ethernet.

I left the diald setup on the box with the modem unchanged. Having
recompiled the kernel, I execute the script below (my internal lan is
192.168.1, the ethernet card on the box connected to is 192.168.1.1).

Now I can connect to the outside world from my other box, but I seem to
come from my main box (the one I have an IP number for).

Is this useful? Let me know.

Giuseppe

#!/bin/sh
#
# Set up IP forwarding/masquerading for ds3-net.
#
# Forward packets from ds3-net, masquerading as deselby.xs4all.nl.
ipfwadm -F -a masquerade -S 192.168.1.0/24 -D 0.0.0.0/0 -V 192.168.1.1
ipfwadm -F -p deny

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