I've looked around the QoS settings, and I don't see anything that would let me limit the number of connections for a specific MAC address. Anyone know if there's any way to do that? iptables -I FORWARD -p tcp --syn -m iprange --src-range 192.168.22.10 -m connlimit --connlimit-above 125 -j DROP Is that the script I need? I found it in the Tomato wiki. I just need to specify the number of connections and the IP address of the device, right?