PacketFence Adminstration tab
PacketFence is one of the strongest, most flexible, and easy to administer network access control software stacks you will find coming from the FOSS community. Here you see the Administration tab from within the web-interface. From here you can see, first hand, what services are running or stopped. You can start, stop, or restart each service from this interface. This installation was done on a CentOS 5.0 distribution. If you're looking to install PacketFence, I highly recommend CentOS as your target distro.