CheckPoint VPN for Mac OS X
I was able to run the client making some modification to the wireless router configuration:


The DHCP server now gives addresses that start with 192.168.2 instead of the old 192.168.1
The subnet mask of the local IP address is now 255.255.0.0
You run OSX in 32 bit mode keeping the 3 key pressed during boot


After these changes the subsequent call to SNX (configured as described above) was able to associate the proper IP address (that in my configuration was 192.168.1.33, last number changes from connection to connection) to the en7 interface created by SNX and so I've a valid IP address for the router on the 192.168.2 network and one for the office on the 192.168.1 network.

I'm still convinced that something can be done using also the ifconfig command to properly assign IP address, but for now having a connection it's enough for me, I'm posting the result of ifconfig if someone can describe me how to proceed:

en7: flags=8863&lt;UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST&gt; mtu 1350
ether 54:55:43:44:52:00 
inet 192.168.1.33 netmask 0xffffff00 broadcast 192.168.1.255
Check Point Virtual Network Adapter


See also http://www.phillo.it/?p=13

Regards
Massimo