Category: Linux

One of the most fundamental tasks in Linux or–for that matter–any operating system, is adding and removing software. We often need to install software that did not come with our distribution or remove unwanted software. In Debian (of which Kali and Ubuntu belong to), the software package manager is aptitude. Within aptitude, the primary command […]

In many cases, the greatest hurdle to becoming a white hat hacker is proficiency with the command line (cli) Linux. This series is designed specifically for those with aspirations of becoming a pentester/white hat hacker, but lack the basic CLI Linux skills. Aspiring Hackers just starting with Linux are often faced with the dilemma of how […]

Welcome back, my aspiring cyber warriors! A firewall is one of the key security measures necessary for a secure network. Linux has a number of firewalls available to the infosec practitioner that can be crucial to securing their systems without the high cost of commercial systems. It only requires a bit of knowledge and training. […]

Welcome back, my aspiring cyberwarriors! In a previous tutorial here, I introduced you to the Linux firewall, iptables. iptables enables you create a custom firewall for your network quickly and easily without the cost of the commercial firewalls. In this tutorial, we will build upon iptables to create an application layer IDS/IPS by combining iptables […]

Welcome back, my aspiring security engineers! There are a multitude of reasons for using Linux but one of the most overlooked is its capabilities and versatility as a firewall. While many firms spend thousands or tens of thousands of dollars on state-of-the art firewalls, you can build your own with just few hours of your […]

Welcome back, my aspiring cyberwarriors! In this continuing series on Linux Basics for Hackers, I now want to address Loadable Kernel Modules (LKMs). LKM’s are critical to the Linux administrator as they provide them the capability to add functionality to the kernel without having to recompile the kernel. Things like video and other device drivers […]

As I have mentioned several times in my previous Linux tutorials, nearly everything in Linux is a file, and very often they are text files. For instance, all of the configuration files in Linux are text files. To reconfigure an application in Linux, we simply need to open the configuration file, change the text, re-save, […]

I’ve been writing these Linux tutorials in an attempt to fill the void in the education of some aspiring hackers into the Linux operating system. Without good Linux skills, the world of hacking is largely closed door to you. There is a lot to know, and in this tutorial, we’ll look at Linux file permissions. […]

From working with thousands of aspiring hackers, I have found that very often the greatest hurdle to getting started in hacking is unfamiliarity with Linux. After years of working with the GUI’s of MAC and Windows, newbies in this field get scared away by the command line and Linux. Overcoming that hurdle is primary motivation […]