I have basically listed out various Linux distributions focusing on security. These Linux distros provide various tools that are needed for assessing networking security and other similar tasks. List is in no particular order.1. Kali Linuxa Linux is the most widely known Linux distro for ethical hacking and penetration testing. Kali Linux was developed by Offensive Security taking on the mantle of BackTrack.
Kali Linux is based on Debian. It comes with a large amount of penetration testing tools from various fields of security and forensics. And now it follows the rolling release model, meaning every tool of your collection will always be up-to-date.
It is the most advanced penetration testing platform out there. It supports a wide range of devices and hardware platforms. Moreover, Kali Linux provides decent documentation and a large & active community.
BackBox is a Ubuntu-based distro developed for penetration testing and security assessment purpose. It is one of the best distro in its field.
BackBox has its own software repository providing latest stable versions of various system & network analysis toolkits and the best known ethical hacking tools. It is designed with minimalism in mind and uses XFCE desktop environment. It delivers a fast, effective, customizable and complete experience. It also has a very helpful community behind it.
Parrot Security OS is relatively new in the game.Frozenbox Networkis behind the development of this distro. The target users of Parrot Security OS are penetration testers who need cloud friendly environment with online anonymity and encrypted system.
Parrot Security OS is also based on Debian and uses MATE as its desktop environment. Almost every recognized tool for penetration testing is available here, along with some exclusive custom tools from Frozenbox Network. And yes, it is available as Rolling Release.
DEFT, short for Digital Evidence & Forensics Toolkit, Linux is a distribution made for Computer Forensics, with the purpose of running live system without corrupting or tampering devices connected to the PC where the booting takes place.
DEFT is paired with DART (Digital Advanced Response Toolkit), a Forensics system for Windows. It uses LXDE desktop environment and WINE for running Windows tools.
Pentoo is based on Gentoo Linux. It is a distro focused on security and penetration testing and is available as LiveCD with persistence support (means any changes made in the Live environment will be available on the next boot if you use a USB stick).