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This guide explains how you can run virtual machines with VirtualBox 4.1 on a headless Fedora 17 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to connect to the virtual machines over a remote desktop connection, so there's no need for the VirtualBox GUI.

This guide provides an overview on how to set up umbrella monitoring to monitor applications and devices in distributed networks. Multiple instances of monitoring systems (in this example Verax NMS express) can be configured in a tree-like, master-slave, federated umbrella monitoring structure. This umbrella-like monitoring can be used to monitor geographically distributed networks e.g. by telecommunications operators to manage regional, state and national networks or managed service providers for managing their clients' infrastructure.

This tutorial shows how to prepare a CentOS 6.3 x86_64 server for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: nginx web server, Postfix mail server, MySQL, BIND nameserver, PureFTPd, SpamAssassin, ClamAV, Mailman, and many more. Since version 3.0.4, ISPConfig comes with full support for the nginx web server in addition to Apache; this tutorial covers the setup of a server that uses nginx, not Apache.

This tutorial shows how you can install an Apache2 webserver on a CentOS 6.3 server with PHP5 (through PHP-FPM) and MySQL support. PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites.

This tutorial shows how you can set up a Linux Mint 13 (Maya) desktop (with the XFCE desktop) that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge.

This short article explains how you can block the most common exploits, SQL injections, file injections, spam and user agents used by hackers and bandwidth hoggers from your nginx vhosts with some simple configuration directives. This configuration is far from being complete, but it's a good starting point. You will have to watch your logs for attempted break-in attempts and then try to modify/complete the ruleset.

In my day to day work I come across a lot of tasks that I actually "hate" to be honest. Most of these tasks consist of things that are repetitive and take up a lot of time. A co-worker of mine once told me, "if you have to do a task more than once, automate it!". This is one piece of advice that intrigued me. Ever since that day I have been thinking about automation and how to make processes flow smoother than they did before. But the main question always is, what tool are you going to use for that?

LAMP is short for Linux, Apache, MySQL, PHP. This tutorial shows how you can install an Apache2 webserver on a CentOS 6.3 server with PHP5 support (mod_php) and MySQL support.

In this HowTo I will describe how to prepare a CentOS 6.3 server for OpenVZ. With OpenVZ you can create multiple Virtual Private Servers (VPS) on the same hardware, similar to Xen and the Linux Vserver project. OpenVZ is the open-source branch of Virtuozzo, a commercial virtualization solution used by many providers that offer virtual servers. The OpenVZ kernel patch is licensed under the GPL license, and the user-level tools are under the QPL license.

This tutorial shows how you can install Linux Mint's Cinnamon desktop on Fedora 17. Since it has now been included in the repositories this can now be done quite quickly. Fedora's default desktop at the moment is GNOME 3.

This tutorial shows how you can set up a Linux Mint 13 (Maya) desktop (KDE version) that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge.

This tutorial shows how you can install MyUnity, the extended Unity desktop configuration tool, on Linux Mint 13. MyUnity can usually only be used on Ubuntu operating systems, however you can get it to run under Mint as well with a little source-file customization.

This tutorial shows how to prepare a CentOS 6.3 x86_64 server for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: nginx web server, Postfix mail server, MySQL, BIND nameserver, PureFTPd, SpamAssassin, ClamAV, Mailman, and many more. Since version 3.0.4, ISPConfig comes with full support for the nginx web server in addition to Apache; this tutorial covers the setup of a server that uses nginx, not Apache.

Everybody knows how hard is to push out as much as possible from your webserver(s). In my daily occupation as a hosting engineer that means I fairly often get the same question, "Wow, cool website, but can it cope with big-time traffic?".

phpvirtualbox is a web-based VirtualBox front-end written in PHP that allows you to access and control remote VirtualBox instances. It tries to resemble the VirtualBox GUI as much as possible to make work with it as easy as possible. It is a nice replacement for the VirtualBox GUI if you run VirtualBox on headless servers. This tutorial explains how to install phpvirtualbox on an OpenSUSE 12.1 server to manage a locally installed, headless VirtualBox.

This tutorial explains how you can integrate ClamAV into PureFTPd for virus scanning on an Ubuntu 12.04 system. In the end, whenever a file gets uploaded through PureFTPd, ClamAV will check the file and delete it if it is malware.

If you use LVM volumes for your VirtualBox VMs, you can create backups and clones of a running VM without shutting it down. This tutorial shows just that: using LVM snapshots to create backups and clones of running VirtualBox VMs without downtime.

This document describes how to install a PureFTPd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. In addition to that I will show the use of quota and upload/download bandwidth limits with this setup. Passwords will be stored encrypted as MD5 strings in the database. This tutorial is based on Ubuntu 12.04.

Usually, VirtualBox creates its virtual machines in disk images (.vdi, .vmdk, etc.). This tutorial explains how you can use RAW devices from the host (partitions, LVM volumes, etc.) and create a VirtualBox VM in it. I will also explain how to mount a RAW device in an existing VM.

An email gateway (a.k.a. firewall) is a machine (physical or virtual) installed between Internet and the email server. Its primary role is to protect the email server by filtering incoming messages, via SMTP protocol, from Internet. Secondary, an email gateway may be used as an outgoing gateway in case you want to add some new email features which are not provided by older email servers. For instance, Exchange 2000 or 2003 has no DKIM signing and verification service – a quality improvement for message delivery. This tutorial shows how to configure an email gateway with the Scrollout F1 email gateway.