Wireless internet

My neighbours are stealing my wireless internet access. I could encrypt it or alternately I could have fun.

I'm starting here by splitting the network into two parts, the trusted half and the untrusted half. The trusted half has one netblock, the untrusted a different netblock. We use the DHCP server to identify mac addresses to give out the relevant addresses.

He then goes on to direct them to kittenwar, turns all the pictures upside down and reverses them and finally makes everything blurry. All because his wireless internet connection is unsecured