Thanks for the response. A simple IP calculator would be: http://jodies.de/ipcal
As you'll see the concept is very simpe and I think would be simple in code as well. If the IP Lockdown would allow me to enter 192.168.0.1-192.168.0.100 and allow anything betweeen and including those numbers that would be great. If it could go the next step further and allow 192.168.1.1/24, this allows 254 hosts or 192.168.0.1-192.168.0.255. As you'll see in the IP calculator something like 192.168.0.1/28 allows for 14 hosts or 192.168.0.1-192.168.0.14.
Ideally, coding this to accept down to /16 would then allow the modules use in large networks of up to 65,534 hosts.
If there is a cost for this update, let me know. This is of pretty good value to us.
Thanks for your time