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Unix+clones

How To Save Traffic With Apache2's mod_deflate

Post date: May 19, 2006, 18:05 Category: Network Views: 3405 Comments
Tutorial quote: In this tutorial I will describe how to install and configure mod_deflate on an Apache2 web server. mod_deflate allows Apache2 to compress files and deliver them to clients (e.g. browsers) that can handle compressed content which most modern browsers do. With mod_deflate, you can compress HTML, text or XML files to approx. 20 - 30% of their original sizes, thus saving you server traffic and making your modem users happier.
Unix+clones

Using Gmail as GNOME’s default mailer

Post date: May 17, 2006, 15:05 Category: Desktop Views: 2927 Comments
Tutorial quote: I started using Gmail as my primary mail application a little over a year ago. For the most part, it has been a pleasurable experience. However, to my knowledge there has not been a simple way to make Gmail your default mailer in GNOME. There are firefox extensions that implement this functionality, but I used epiphany and the functionality does not extend to the entire GNOME desktop.
Unix+clones

How to build KDE 4

Post date: May 15, 2006, 22:05 Category: Installing Views: 3033 Comments
Tutorial quote: This topic describes how to build KDE 4 from subversion. I use an example way to show best practices. First, I get the build to work for the user kde-devel. This builds as well kdebase as kdelibs (arts is no longer needed). Then, I give some hints how to change code to KDE 4 for the case that you are in another KDE module.
To reduce complexity, we use the bash-shell (standard) throughout the tutorial.
Unix+clones

Convert any video file to DVD with open source tools

Post date: April 28, 2006, 17:04 Category: Multimedia Views: 4315 Comments
Tutorial quote: You've just downloaded the new episode of your favorite video podcast, and you'd like to watch it on your big-screen TV. Unfortunately, the video is encoded in XviD or QuickTime format, which your DVD player doesn't support. Don't worry -- here's how you can convert any video file to DVD using dvdauthor and MPlayer.
Unix+clones

Enhance boot-time security with GRUB passwords

Post date: April 26, 2006, 13:04 Category: Security Views: 2986 Comments
Tutorial quote: The security of data files on your computer is at risk, and not just because you are connected to the Internet. Anyone with physical access to your machine can bypass all passwords to gain entry to your hard disk with one simple command given to the bootloader. Fortunately, the popular GRand Unified Bootloader (GRUB) is equipped with security features to prevent such an 'attack.' It can password protect each entry of your boot menu.
Unix+clones

Unattended rdiff-backup HOWTO

Post date: April 3, 2006, 08:04 Category: Software Views: 4009 Comments
Tutorial quote: This page describes how to set up rdiff-backup to run, as a non-root user, unattended from a crontab. We will utilize features of rdiff-backup and OpenSSH to secure the setup as much as possible.
Unix+clones

Optimizing DSPAM + MySQL 4.1

Post date: April 2, 2006, 22:04 Category: Optimizing Views: 3850 Comments
Tutorial quote: DSPAM is a scalable and open-source content-based spam filter designed for multi-user enterprise systems. It's great at filtering out spam but on busy mailservers the pruning of the MySQL databases takes way too long time ...
Unix+clones

Two-in-one DNS server with BIND9

Post date: April 1, 2006, 05:04 Category: Software Views: 3961 Comments
Tutorial quote: This tutorial shows you how to configure BIND9 DNS server to serve an internal network and an external network at the same time with different set of information. To accomplish that goal, a new feature of BIND9 called view is used. As a tutorial it'll walk you through the whole set up, but initial knowledge of BIND and DNS is required, there are plenty of documents that cover that information on the Internet.
Unix+clones

A web server in a shell script

Post date: March 14, 2006, 08:03 Category: Programming Views: 16515 Comments
Tutorial quote: Suppose you want to experiment a little with web pages and CGI's, but you don't want the hassle of installing the full Apache package. This quick and dirty shell script could just be what you need.

Put simply, a web server is an application that sends local text files over the network to the clients that request them. If you let another program (for example inetd) deal with the network part, the web server could be reduced to a mere cat "$filename" to stdout. Of course, the difficult part would be to extract that filename out of the HTTP request string: nothing that a Bash script cannot easily do!
Unix+clones

Installing and securing Squid

Post date: March 13, 2006, 15:03 Category: Software Views: 4795 Comments
Tutorial quote: Squid is a high-performance proxy caching server for web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid supports SSL, extensive access controls, and full request logging. By using the lightweight Internet Cache Protocol, Squid caches can be arranged in a hierarchy or mesh for additional bandwidth savings.

After the installation and base configuration of squid we will add another layer of security by chrooting it.
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