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Debian

Setting Up A High-Availability Load Balancer (With Failover and Session Support) With HAProxy/Heartbeat On Debian Etch

Post date: November 7, 2007, 11:11 Category: Network Views: 4435 Comments
Tutorial quote: This article explains how to set up a two-node load balancer in an active/passive configuration with HAProxy and heartbeat on Debian Etch. The load balancer sits between the user and two (or more) backend Apache web servers that hold the same content. Not only does the load balancer distribute the requests to the two backend Apache servers, it also checks the health of the backend servers. If one of them is down, all requests will automatically be redirected to the remaining backend server. In addition to that, the two load balancer nodes monitor each other using heartbeat, and if the master fails, the slave becomes the master, which means the users will not notice any disruption of the service. HAProxy is session-aware, which means you can use it with any web application that makes use of sessions (such as forums, shopping carts, etc.).
Ubuntu

Setting Up Proftpd With A Postgresql Backend For Auth And Logging

Post date: June 17, 2006, 06:06 Category: Software Views: 3607 Comments
Tutorial quote: This tutorial is very niche, I'm going to cover only proftpd, and only in so much as to get it operational with Postgres. A basic understanding of proftpd, and Postgres is assumed. This tutorial will get you up and running proftpd pretty fast, and having it utilize a database, if that database has triggers, the possibilities of this configuration are almost endless.
Linux

Viewing CHM files, and converting CHM to HTML or PDF files in (Ubuntu) Linux

Post date: July 17, 2008, 12:07 Category: Software Views: 5266 Comments
Tutorial quote: A Tutorial to show how to view MS Proprietary CHM files, and/or convert the to HTML or PDF documents in Linux.
OpenSUSE

Roll your own custom RDP thin client

Post date: November 11, 2007, 05:11 Category: Desktop Views: 4717 Comments
Tutorial quote: Have some old boxes around? You can save money buy following the tutorial below and roll your own thin client using openSuSE 10.2 and a custom xdm script that loads a python script containing two button, one for shutting down the computer and one for logging into an RDP session.

Ubuntu

Miro - Internet TV for your Ubuntu Desktop

Post date: October 26, 2008, 19:10 Category: Software Views: 3484 Comments
Tutorial quote: Miro is a free application for channels of internet video (also known as ‘video podcasts and video rss). Miro is designed to be easy to use and to give you an elegant fullscreen viewing experience.

There are thousands of free internet video channels that you can watch. You’ll be able to download all the videos that each channel offers and when new ones are released, Miro will grab them automatically.
Debian

How To Enable Multiple HTTPS Sites For One IP On Debian Etch Using TLS Extensions

Post date: November 19, 2007, 11:11 Category: Software Views: 3597 Comments
Tutorial quote: This guide is Debian specific but could be ported to other distributions since the concept is the same. In order to use TLS Extensions we have to patch and recompile Apache2 and recompile OpenSSL with the enable-tlsext directive. Since TLS extensions are relatively new, some Internet browsers will not work so the Apache2 server will deliver just the default site as http 1.0 does on an http 1.1 server.
RedHat

Taking advantage of SELinux in Red Hat Enterprise Linux

Post date: April 15, 2005, 21:04 Category: Security Views: 3742 Comments
Tutorial quote: The release of Red Hat Enterprise Linux 4 debuts the first commercially supported inclusion of Security-Enhanced Linux (SELinux). An installation of Red Hat's latest enterprise operating system has SELinux installed and enabled by default. In the past SELinux has been criticized for a lack of commercial support, many big sites were unable to use it due to the lack of support (Fedora Core 3 doesn't have the support that they require). Now in Red Hat Enterprise Linux 4, SELinux is a supported part of the OS, and such objections to the use of SELinux have gone away. SELinux is now widely regarded as being suitable for the largest sites.
Debian

How to set up an encrypted filesystem in several easy steps

Post date: December 10, 2006, 08:12 Category: Security Views: 3318 Comments
Tutorial quote: There's been a lot of talk lately about encrypted partitions, and Debian is proud to offer a feature to easily create them in the etch installer since beta3. But what about existing systems? This guide walks you through setting up an encrypted partition using cryptsetup and LUKS.
Ubuntu

How to setup FreeNX server and Client in Ubuntu 8.10 (Intrepid)

Post date: April 13, 2009, 07:04 Category: Software Views: 3672 Comments
Tutorial quote: FreeNX is a system that allows you to access your desktop from another machine over the Internet. You can use this to login graphically to your desktop from a remote location. One example of its use would be to have a FreeNX server set up on your home computer, and graphically logging in to the home computer from your work computer, using a FreeNX client.

OpenSUSE

Celestia - free opensource Space Simulation to explore the universe

Post date: September 10, 2008, 17:09 Category: Desktop Views: 3953 Comments
Tutorial quote: Celestia is a free opensource space simulation software that lets you explore our universe in three dimensions. Celestia provides photo-realistic, real-time, three-dimensional viewing of the solar system, the galaxy and the universe and has become a valuable tool for education in Astronomy. Celestia is used in homes, schools, museums and planetariums around the world, it also is used as a visualization tool by space mission designers.
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