SoftTrick

What Is BackTrack? So now that you are familiar with Linux, let me introduce you to BackTrack. BackTrack is a Linux penetration testing distro developed by Offensive Security especially for ethical hackers and penetration testers. It contains all the popular tools and software used for pen testing a variety of services, networks, and devices. BackTrack 5 is the latest version of the Linux penetration testing distro at the time of writing this chapter. It comes in two flavors: Gnome and KDE. Gnome is an Ubuntu-based Linux operating system that has officially been introduced only in the latest version of BackTrack. Here is a screenshot of BackTrack 5.

File Permission in Linux Although there are already a lot of good security features built into Linux-based systems, based upon the need for proper permissions, I will go over the ways to assign permissions and show you some examples where modification may be necessary. Wrong file permission may open a door for attackers in your system. Group Permission Owner —The Owner permissions apply only the owner of the file or directory; they will not impact the actions of other users. Group —The Group permissions apply only to the group that has been assigned to the file or directory; they will not affect the actions of other users. All User/Other —The All Users permissions apply to all other users on the system; this is the permission group that you want to watch the most. Each file or directory has three basic permission types: Read —The Read permission refers to a user’s capability to read the contents of the file. Write —The Write permissions refer to a user’s capability ...