Category Archives: Linux

LetsEncrypt + Amazon EC2 = SSLLabs A Rating

I wanted to easily add web security to a static AWS EC2 website to improve the search rankings. I found a guide by Ivo Petkov however there were a few problems with his instructions. I followed his advice: sudo yum install … Continue reading

Posted in Linux, Security, Shell Scripting, System Administration, System Engineering, Uncategorized, Web Security | Tagged , , , , , , , | Leave a comment

Building a Teensy 3.2 w/SD and 8 position DIP switch + Reset button

I’ve always wanted to build a versatile Teensy-based device for use in physical security penetration testing. I’ve seen Irongeek’s device, and Mike Czumak’s dongle,  but neither of these had an SD card, and only had a 4 of 5 position … Continue reading

Posted in Hacking, Linux, Security | Tagged , , , | Leave a comment

Scanning for confidential information on external web servers

One of my clients wanted us to scan their web servers for confidential information. This was going to be done both from the Internet, and from an internal intranet location (between cooperative but separate organizations). In particular they were concerned … Continue reading

Posted in Linux, Security, Shell Scripting | Tagged , , , , , , , , , , , , , , , , , | Leave a comment

Setting up Kali 1.1.0 on the new Raspberry Pi 2

My new Raspberry Pi 2 arrived, and I wanted to install Kali on it. I was preparing to follow the steps of Richard Brain,  but before I started, the folks at Kali tweeted that there was now a download available.  … Continue reading

Posted in Hacking, Linux, Security, System Administration | Tagged , , | 1 Comment

Extracting shell commands from Kali’s application menu

I use the Linux command line whenever I can.  Using the mouse to execute something when my fingers are on the keyboard irritates me. I was using the Kali linux distribution to do some pentesting. And I was getting frustrated. … Continue reading

Posted in Linux, Security, Shell Scripting | Tagged , , , | Leave a comment

Cataloging SDHC Cards on Ubuntu using a bash script

I have a lot of SD memory cards. I use them for my Camera, my Raspberry Pi, and for my laptop. They are cheap enough, I get several spares. And it makes it easy to convert my Raspberry Pi into … Continue reading

Posted in Linux, Shell Scripting | Tagged , , , , , , , | 1 Comment

Setting up your Linux environment to support multiple versions of Java

Four ways to change your version of Java Most people just define their JAVA_HOME variable, and rarely change it. If you do want to change it, or perhaps switch between different versions, you have some choices:  Use update-alternatives (Debian systems) … Continue reading

Posted in Linux, Shell Scripting, System Administration | Tagged , , , , , , , | 5 Comments