How to Install and Configure Fail2ban on CentOS 7, CentOS 6.x and Ubuntu 14.04

This is a step by step guide on installing and configuring Fail2ban software on CentOS 7, CentOS 6.x and Ubuntu 14.04 Server. It is easy to follow and working. Basic Theory on...

How to Integrate Openfire XMPP Chat Server with Asterisk PBX server

After successfully Installing Asterisk PBX server and Installing Openfire XMPP Chat server, it's time to integrate the two so that our Chat server can be used within the VOIP infrastructure build...

Complete guide on how to Install Openfire XMPP chat server on Centos 7.x

Openfire is a powerful instant messaging (IM) and chat server that uses XMPP/Jabber protocol. Openfire is a very popular Messaging (Chat) and Presence Server,It is the base for a range of...

Step by step guide on how to extend Vdi and VMDK Hard disks on...

This will show you how to extend Any operating system's Virtual Hard Disk running on VirtualBox ; both vdi and VMDK virtual hard drive formats. When i was working on a...

Easiest way to create Vagrant Box from existing Virtualbox VM

This is a short tutorial on how to create Vagrant machine from existing Virtualbox Virtual Machine.Vagrant tool give you best environment to manage and control your Virtual Machines. This works on...

How to install Asterisk PBX 13.x on CentOS 7 step by step guide

Hello guys, we're going to do Asterisk 13.0.6 installation in this guide. This will be a complete easy to follow tutorial. So let's start by defining what a PBX and Asterisk...
Install Docker CE

How to install Docker CE on Ubuntu / Debian / Fedora / Arch /...

How to Install Docker CE on Ubuntu, Debian, Fedora, Arch, and CentOS guide is provided here. Note that older versions of docker ( docker and docker-engine), are no longer supported. At the...

How to add,install and run CentOS 7 Vagrant box to Virtualbox using Vagrant

Hello guys. Today we'll look at How to install centos 7 box with vagrant on virtualbox. Below are the steps to follow 1) First download the Centos 7 vagrant box from the...

How to Turn Off Hardware Beep Sound For Terminal on Major Linux Distributions

The beep sound is really annoying on a Linux system especially when trying to use TAB completion for commands on a Linux terminal.If you are new to Linux have a look...

How to Protect GRUB Bootloader with password on CentOS 7 and RHEL 7

Grub is the reference implementation of the Free Software Foundation's Multi-boot Specification, which provides a user the choice to boot one of multiple operating systems installed on a computer or select...