If you are a Linux user then you already know that in Linux everything is written in the file. A device in Linux is represented as a file, for configuring a service you have to edit lots of files like a mail server or a web server, even firewall information is …
If you are familiar with LXD container then, you may already visited this lxd try it online link. Where you can create LXD container and do some basic operation on a demo server within a given time period (usually 30 minutes). After the time period you will be logout from the …
Hello everyone. Today I’ll show you how to implement 2 factor authentication for SSH on Ubuntu 16.04 server using the Google Authenticator app. We will use ssh key (1st factor) and a randomly generate code (2nd factor) by Google Authenticator to login to our Ubuntu server. I use Amazon EC2 …
In my previous article (“How to automate your IT infrastructure with puppet“) I showed you how to install and configure puppet, and how to write simple manifest.Today I’ll show you how to write those simple manifest using puppet classes and modules using the same server environment. What is class and …
A serious bug has been detected recently in Linux kernel named Dirty COW (CVE-2016-5195). An unprivileged local user can use this flaw to gain write access in the system. The bug existed since around 2.6.22+ (release in 2007) and was fixed on Oct 18, 2016. Exploitation of this bug does …
Hello everyone. In my previous article named “One puppet to rule them all“, I told you about what puppet is and how it works. if you miss the first part you can find it here. In this part i’ll show you the installation and configuration of Puppet. In real life …
