thank you for replying me.
The command you're using would normally be run from a script. Would you please check the values of $OUTER_PORT and $INNER_IP and make sure they're valid? The rest looks good, assuming your kernel and iptables binary have ULOG support. Cheers, - Bill
I checked the values by changing $OUTER_PORT and $INNER_PORT to eth0 and 192.168.1.0/24 respectively. But, I got the same output "invalid argument"
I'm sure that I set "ULOG target support" as a module when I compiled kernel, so I think my kernel have ULOG support. And I don't know how to check the iptalbe binary have ULOG support.
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