Operator
Operator is a very fully featured LiveCD totally oriented around network security (with open source tools of course).
Operator is a complete Linux (Debian) distribution that runs from a single bootable CD and runs entirely in RAM. The Operator contains an extensive set of Open Source network security tools that can be used for monitoring and discovering networks. This virtually can turn any PC into a network security pen-testing device without having to install any software. Operator also contains a set of computer forensic and data recovery tools that can be used to assist you in data retrieval on the local system.
[url]http://linux.softpedia.com/get/System/Operating-Systems/Linux-Distributions/Operator-8353.shtml[/url]
PHLAK
PHLAK or [P]rofessional [H]ackers [L]inux [A]ssault [K]it is a modular live security Linux distribution (a.k.a LiveCD). PHLAK comes with two light guis (fluxbox and XFCE4), many security tools, and a spiral notebook full of security documentation. PHLAK is a derivative of Morphix, created by Alex de Landgraaf.
Mainly based around Penetration Testing, PHLAK is a must have for any pro hacker/pen-tester.
[url]http://soft.mydiv.net/lin/download-PHLAK.html[/url]
Screen: [url]http://4.bp.blogspot.com/_s4Oz51luJRA/Shzm-pIHB9I/AAAAAAAAAM0/vwDNSlEenTw/s400/overclox.jpg[/url]
Auditor
Auditor although now underway merging with WHax is still an excellent choice.
The Auditor security collection is a Live-System based on KNOPPIX. With no installation whatsoever, the analysis platform is started directly from the CD-Rom and is fully accessible within minutes. Independent of the hardware in use, the Auditor security collection offers a standardised working environment, so that the build-up of know-how and remote support is made easier
[url]http://linux.softpedia.com/get/System/Operating-Systems/Linux-Distributions/Auditor-Security-Linux-2616.shtml[/url]
L.A.S Linux
L.A.S Linux or Local Area Security has been around quite some time aswell, although development has been a bit slow lately its still a useful CD to have. It has always aimed to fit on a MiniCD (180MB).
Local Area Security Linux is a Live CD distribution with a strong emphasis on security tools and small footprint. We currently have 2 different versions of L.A.S. to fit two specific needs MAIN and SECSERV. This project is released under the terms of GPL.
[url]http://distrowatch.com/table.php?distribution=las[/url]
F.I.R.E
A little out of date, but still considered the strongest bootable forensics solution (of the open-source kind). Also has a few pen-testing tools on it.
FIRE is a portable bootable cdrom based distribution with the goal of providing an immediate environment to perform forensic analysis, incident response, data recovery, virus scanning and vulnerability assessment.