While the name ReefEdge may sound familiar, you may not be aware that ReefEdge offers a free product (for noncommercial use) called Dolphin to help secure and manage wireless networking.
Here's how it works: You download the software (.iso) from http://www.reefedge.com/techzone and burn a CD. Then you get an old PC and boot from the CD. If the PC's BIOS does not support CD boot, you can get a bootable floppy disk that will start the boot process and then read from the CD for the rest of the files needed for the installation process. The process only takes a few minutes to write the custom Linux OS to the hard drive. When it's done, simply remove the CD and reboot the machine.
Here are the hardware requirements:
Pentium (586 or ...