Is there a port of iptables done on Mac OS 10.X anywhere? If not, is it easy to do the port ourselves? If I understand correctly, there are two parts of iptables, kernel space and user space and what we use in the RPM is only user space. It need the kernel space change compiled into the kernel, e.g. Linux. If so, does anyone know if the Mac OS kernel, based on BSD I believe, supports the user space part of the iptables? Any help is appreciated. Alex Chen