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This guide explains how you can create advanced virtual hosts on a lighttpd web server on Debian Etch that are stored in a MySQL database. The method described here does not use the lighttpd mod_mysql_vhost module, and unlike mod_mysql_vhost (which allows you to store only the hostname and document root of a vhost in a database), this method allows to store individual configuration directives for each vhost in the MySQL database.

This tutorial explains how you can set up a FreeRadius server with Wifi authentication and accounting in conjunction with MySQL & web management with Daloradius on Ubuntu 8.04 (LTS). This howto should work for a newbie. Production deployment is also possible with minor tweaking.

In this article I will show how to install and use QuickStart on an Ubuntu 8.04 desktop. QuickStart is like a Swiss army knife, it allows you to do various things on your Ubuntu desktop: creating and restoring backups, running scheduled backups, backing up configuration files, installing some common applications, installing DVD codecs, deleting unnecessary files, etc.

This article explains how you can install and configure apache2-mpm-itk on a Debian Etch server. apache2-mpm-itk is an MPM (Multi-Processing Module) for the Apache 2 web server. mpm-itk allows you to run each of your vhost under a separate UID and GID - in short, the scripts and configuration files for one vhost no longer have to be readable for all the other vhosts. mpm-itk works with mod_php because mpm-itk is based on the traditional prefork MPM, which means it is non-threaded. This means you do not need to use suExec or suPHP anymore to run a website's PHP scripts as a separate user.

This article shows how you can install the PHP WebDAV extension for PHP5 on a Debian Etch system. The PHP WebDAV extension allows easy access to remote resources through the DAV protocol from PHP scripts.

In this HowTo I will describe how to prepare an Ubuntu 8.04 LTS 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.

Ocassionally, servers need to be retasked for various reasons. It has always been a challenge when the server has a distribution other than what I need. I do not want to drive to the data center to swap CDs around, so I decided to see if there was a way to remotely install the machine. I found some notes by Erik Jacobsen and used them to come up with an up-to-date how-to.

This guide explains how to set up WebDAV with lighttpd on a Debian Etch server. WebDAV stands for Web-based Distributed Authoring and Versioning and is a set of extensions to the HTTP protocol that allow users to directly edit files on the lighttpd server so that they do not need to be downloaded/uploaded via http://FTP. Of course, WebDAV can also be used to upload and download files.

I recently decided to study for the Cisco CSSP certification. My main concern in the beginning was the fact that most of the lab simulation software that I found out there could only run on Windows, this was a problem for me given the fact that I do not own a Windows computer. After a quick search I found the wonderful Dynamips project that goes beyond what other simulators do by running actual Cisco IOS images, as well as the PEMU project which allows for running of Cisco PIX images. To integrate the various pieces of software and provide an interface for interaction with the devices I used dynagen.

This guide explains how you can use mod_mysql_vhost to create simple virtual hosts on a lighttpd web server on Debian Etch. With mod_mysql_vhost, lighttpd can read the vhost configuration from a MySQL database. Currently, you can store the domain and the document root in the MySQL database which results in very simple virtual hosts. If you need more directives for your vhosts, you would have to configure them in the global section of lighttpd.conf, which means they would be valid for all vhosts. Therefore, mod_mysql_vhost is ideal if your vhosts differ only in the domain and document root.

This guide shows how you can install the CentOS Directory Server on CentOS 5.2. It is hardened by real-world use, is full-featured, supports multi-master replication, and already handles many of the largest LDAP deployments in the world. The CentOS Directory Server (based on Fedora Directory Server) can be downloaded for free and set up in less than half an hour.

This article shows how you can install the Zimbra Desktop email client on an Ubuntu 8.04 LTS (Hardy Heron) desktop. Zimbra Desktop is a full-fledged replacement for email clients such as Outlook or Evolution, offering email, contacts, calendar, documents, tasks, etc. You can use it in conjunction with the Zimbra Collaboration Suite (ZCS) or any other email account that supports POP3 or IMAP.

I have been running with a MySQL backend for virtual hosting for some time, but when I discovered Phamm and the added FTP feature I decided to switch to LDAP as backend for Postfix with virtual hosting. In view of the fact that the installation and configuration guide of Phamm is lacking some basic information it took me quite some time to put it all together and get it working. Piecing it all together was not simple so I would like to share how I configured it and got it all working toghether.

This tutorial will walk you through setting up a Linux layer 7 packet classifier on CentOS 5.1, this can easily be adapted to any other Linux distribution out there.

In this HowTo I will describe how to prepare a CentOS 5.2 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.

Dan Kaminsky earlier this month announced a massive, multi-vendor issue with DNS that could allow attackers to compromise any name server - clients, too. These two articles explain how you can fix a BIND9 nameserver on Debian Etch and Fedora/CentOS so that it is not vulnerable anymore to DNS cache poisoning.

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 guide attempts to provide a Xen based test environment where you can practice setting up a two node cluster (cluster setup itself is not discussed here - I am merely giving you what you need to set it up).

This tutorial explains how to install Django on a Debian Etch server. Django is a web framework that allows to develop Python web applications quickly with as much automation as possible. I will use it with Apache2 and mod_python in this guide.

This article describes how to install and configure Nginx to accelerate an Apache server based on RHEL 5.2.