Jeff Wilson 
OpenVPN is a free and open-source software application that can be used to securely link two or more private networks using an encrypted tunnel over the Internet. OpenVPN is bound to the OpenSSL library and derives much of its crypto capabilities from it.
Today we will share a script you can use to install and configure OpenVPN on an Ubuntu VPS. The script is pretty much self-explanatory.
In this blog post we will show you how to install Bolt CMS on Ubuntu, with Nginx and MariaDB. Bolt is a lightweight CMS, written in PHP and it’s built upon the Silex framework. This tutorial should work on other Linux VPS systems as well, but was tested and written for Ubuntu. Installing Bolt CMS on Ubuntu is an easy task if you carefully follow the steps bellow.
Squirrelmail is a free and open-source web based email application written in PHP. It is one of the most popular webmail package because of its speed and simplicity. With Squirrelmail you can send, receive and read your emails without an email client, just by using your web browser.
In this article we will walk you through the installation and configuration of a mail server with virtual domains and users using Postfix, Dovecot and OpenDKIM on an Ubuntu VPS. By using virtual domains and users, you can set up unlimited email accounts without creating system users. This should work on other Linux VPS systems as well but was tested and written for Ubuntu.
OwnCloud is free and open source file sharing and collaboration software which provides access to your files through a web interface or WebDAV.
This install guide assumes that Apache, MySQL and PHP are already installed and configured on your Linux virtual server.
At the time of writing this tutorial, ownCloud 6.0.2 is the latest stable version available and it requires:
VirtueMart is an easy to use open source e-commerce component for the Joomla CMS. It offers plenty of features to create and maintain a website store with an unlimited number of categories, products, orders etc.
This install guide assumes that Apache, MySQL and PHP are already installed and configured on your Linux virtual server.
At the time of writing this tutorial, VirtueMart 2.6.0 is the latest stable version available. VirtueMart 2.6.0 is compatible with Joomla 2.5 and it requires:
Rootkits and backdoors are often the worst type of compromise possible. To protect your server against rootkits, backdoors and other security problems it is recommended to install and use Rkhunter on your Linux VPS. Rkhunter (Rootkit Hunter) is a very useful open source software utility that makes various checks on the local system and scans for known rootkits, local exploits, malware and backdoors. Rkhunter checks to see whether the binary files or system startup files have been modified, and performs various checks on the network interfaces, including checks for listening services and applications. Rkhunter runs on most Linux and UNIX systems. It can be run from the command line, but it can also be scheduled to execute on a daily basis as a cron job.
The following article guides through the steps of installing and configuring Nagios3 and Check_MK on a Ubuntu 12.04 LTS VPS.
Once deployed, you will be able to monitor your virtual servers and the services running on them.
Nagios3 is a robust and very powerful monitoring system, which in combination with Check_MK will provide you with a nice and easy way to monitor your virtual servers and services.