Lightweight Portable Security is a LiveCD distro designed by the US Department of Defense to function as a secure end node, in other words, a safe environment from which to access the web or a remote desktop host. The focus is on security, and for this reason, it boots from a CD and executes from RAM, providing a web browser, a file manager and a few other small tools.
The Lightweight Portable Security distribution was created by the Software Protection Initiative under the direction of the Air Force Research Laboratory and the US Department Of Defense. The idea behind it is that government workers can use a CDROM or USB stick to boot into a tamper proof, pristine desktop when using insecure computers such as those available in hotels or a worker’s own home. The environment that it offers should be largely resistant to Internet-borne security threats such as viruses and spyware, particularly when launched from read-only media such as a CDROM. The LPS system does not mount the hard drive of the host machine, so leaves no trace of the user’s activities behind. (courtesy: Linux Journal)