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Old January 4th, 2008, 04:15 PM
WhyCan'tI WhyCan'tI is offline
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Help with natd & ipfw

I have two networks in my location.

The first is a 100Mbps wired & 802.11g wireless network operating on subnet 192.168.1 with subnet mask 255.255.255.0.

The second is a 10Mbps wired & 802.11b wireless network operating on subnet 192.168.2 with subnet mask 255.255.255.0.

A MacBook is on the 802.11g network and has address 192.168.1.100.

Another machine is on the 10 Mbps wired network and has address 192.168.2.229.

A Mac mini is on both networks. Interface en0 has IP address 192.168.1.226. Interface en1 has IP address 192.168.2.200.

Here is a picture:
http://i159.photobucket.com/albums/t...gy/Network.jpg

I am trying to use natd & ipfw on the Mac mini to create a bridge between the two networks. I want to be able to ping from all directions, and for the devices on the 192.168.2 network to be able to reach the internet.

So far I have been using

$ sysctl -w net.inet.ip.forwarding=1
$ natd -v -interface en0
$ ipfw add divert natd all from any to any via en0

But it doesn't appear to be routing any of the traffic.

Any ideas?
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