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Articles with the Linux tag

Mon 27 April 2015

Linux

By John Troon

Rocking it! GNOME3 Shell Extensions..

I don't really give a tinker's damn about your desktop, if you have a picture of a unicorn as your wallpaper or a really old picture of Hitler smiling, that's up to you. Though, sometimes I do care about having my files/folders arranged, in a way I can ...

Thu 19 March 2015

Linux

By John Troon

Queue & Load Average in Linux

Queue is the current runtime queue for processes. Load averages are measurements of this metric over 5-, 10-, and 15- minute intervals. So, the runtime queue is a count of the number of processes ready to run at any given point in time. $ uptime ...

Fri 03 October 2014

Linux

By John Troon

Testing for ShellShock in Linux (CentOS/OEL)

Below is a simple bash script I've been using to test for shellshock vulns in my Linux setups. Though, it's not a script to really decide weather you are totally safe of not, due to the nature of shellshock and other different attack vectors that ...

Sat 13 September 2014

Linux

By John Troon

Exploring anti-DOS tools for Apache httpd

Slowloris is among the well known "Denial Of Service" (or DOS) tool used by both experienced attackers and script kiddies. This evening, I've been testing mod_evasion and mod_antiloris on Apache httpd /2.2.15 (Oracle Linux 6.5 using Redhat built ...

Tue 19 August 2014

Linux

By John Troon

Setting up SSH With Two-Factor Authentication

Two-factor authentication adds a second level of authentication to an account log-in. When you have to enter only your username and one password, that's considered as a single-factor authentication. 2FA requires the user to have two out of three types ...

Tue 24 June 2014

repost, Linux

By John Troon

Disk benchmark with bonnie in Linux

bonnie++ is a different tool compared to other disk testing tools, which are probably included in other performance monitoring tools like vmstat just to mention the most common one on any Linux install. It runs a performance test of the filesystem I/O ...