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How To Set Up A Caching Reverse Proxy With Squid 2.6 On Debian Etch
This article explains how you can set up a caching reverse proxy with Squid 2.6 in front of your web server on Debian Etch. If you have a high-traffic dynamic web site that generates lots of database queries on each request, you can decrease the server load dramatically by caching your content for a few minutes or more (that depends on how often you update your content).
How To Rebuild The Squid 2.6 Debian Package with Support For X-Forwarded-For Headers
This article describes how you can rebuild the Squid 2.6 package for Debian Etch with support for X-Forwarded-For headers - this feature is not enabled in the default Debian Etch Squid package. This feature is useful if you are using Squid as a reverse proxy for your web site and are using a load balancer (such as HAProxy) in front of Squid - it allows us to track the client's original IP address instead of the load balancer's IP address (which to Squid appears as the client).
How To Configure Apache To Use Radius For Two-Factor Authentication On Ubuntu
This document describes how to add WiKID two-factor authentication to Apache 2.x using mod_auth_radius on Ubuntu 8.1. A previous article described how to add two factor authentication to apache on Fedora. Interestingly, a patch has been created to update mod_auth_radius to work with Apache 2.2+, however, it has only been updated for Debian and Ubuntu. For Fedora and other RedHat flavors of Linux, it is recommended that you use mod_auth_xradius.
Set Up A Fully Encrypted Raid1 LVM System
For this Howto I use Debian Lenny (still testing and not "stable" for the simple reason as - contrary to Debian Etch and/or Ubuntu 8.04/8.10 - the install routine does setup the initrd correctly so that you can set up encrypted swap and also an encrypted raid1 lvm during install). This Howto will be heavy on screen shots again - a lot of them are repetitive as I setup multiple partitions at once. Basically I will set up the system in a way that (a) everything [except for /boot] will be encrypted, (b) everything will be on a raid1 and (c) have a LVM for your data partition so that this one can be easily expanded.
Installing Nginx With PHP5 And MySQL Support On Debian Etch
Nginx (pronounced "engine x") is a free, open-source, high-performance HTTP server. Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption. This tutorial shows how you can install Nginx on a Debian Etch server with PHP5 support (through FastCGI) and MySQL support.
Clone/Back Up/Restore OpenVZ VMs With vzdump
vzdump is a backup and restore utility for OpenVZ VMs. This tutorial shows how you can use it to clone/back up/restore virtual machines with vzdump.
Setting Up Master-Master Replication On Four Nodes With MySQL 5 On Debian Etch
This tutorial explains how you can set up MySQL master-master replication on four MySQL nodes (running on Debian Etch). The difference to a two node master-master replication is that if you have more than two nodes, the replication goes in a circle, i.e., with four nodes, the replication goes from node1 to node2, from node2 to node3, from node3 to node4, and from node4 to node1.
Hardening The Linux Kernel With Grsecurity (Debian)
Security is based on three characteristics: prevention, protection and detection. Grsecurity is a patch for Linux kernel that allows you to increase each of these points. This howto was performed on a Debian Lenny system. Thus some tools are Debian specific. However, tasks can be performed with other distro specific tools or even with universal tools (make).
Installing The Link Layer Topology Discovery (LLTD) Protocol Responder For Linux On Debian Lenny
This document describes how to install and configure the Link Layer Topology Discovery (LLTD) Protocol - Responder Source Code from Microsoft. The lld2d daemon allows linux systems to display in Vista's Network Map. This How-To should be easily adaptable to other distros.
phpsh, An Interactive Shell For PHP (Debian Etch)
phpsh is an interactive shell for php that features readline history, tab completion, quick access to documentation. It was developed at Facebook and ironically, is written mostly in python. This article explains how you can install/use it on a Debian Etch system.