Friday, April 19, 2019

How to fix Vagrant ssh authentication failure after packaging vagrant box

Sometimes when you package VirtualBox VM to get a vagrant box, you may get the message "Warning: Authentication failure. Retrying... " while trying to start the vagrant machine. CheckStep by step...

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...

How to Install Latest Kamailio SIP Server on CentOS 7

This guide will help you to install Latest Kamailio SIP Server on CentOS 7. This is part of Series tutorials on Building an Enterprise VOIP System. Kamailio is a distribution of...

How to enable and use SSH X11 Forwarding on Vagrant Instances

This guide will teach you how to configure X11 forwarding to use on Virtual Machine instances managed by Vagrant. This is a series Tutorial on building Virtual Labs with Vagrant and...

How to install Adobe Reader 9.5.5 on Fedora 23,22 and Fedora 21

As you all know, Adobe Reader is the most popular program in the world for viewing, creating, managing and manipulating PDF (Portable Document Format) files. Luckily, there is a Version for...

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...

Step by step guide on using existing virtual machines with Vagrant

This will guide you on packaging existing environments to use with Vagrant, replacing the shared disk with a new box file. These box files can make managing virtual machines and different...

Top Things to do after fresh installation of CentOS 7.x minimal

After fresh installation of CentOS 7, the following are list of things that you may consider doing to get your server ready for any kind of setup. The list is not ...