Ubuntu blogs

How To Block Spam Before It Enters The Server (Postfix)

The last few weeks have seen a dramatic increase in spam (once again). Estimates say that spam makes now up for 80 - 90% of all emails, and many mail servers have difficulties in managing the additional load caused by the latest spam, and spam filters such as SpamAssassin do not recognize large parts of that spam as they did before. Fortunately, we can block a big amount of that spam at the MTA level, for example by using blacklists, running tests on the sender and recipient domains, etc. An additional benefit of doing this is that it lowers the load on the mail servers because the (resource-hungry) spamfilters have to look at less emails. http://www.howtoforge.com/block_spam_at_mta_level_postfix

The Perfect Xen 3.1.0 Setup For Debian Etch (i386)

This tutorial describes how to install Xen 3.1.0 on a Debian Etch system (i386). Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called virtual machines or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. http://www.howtoforge.com/debian_etch_xen_3.1

Azureus - A Nice Java BitTorrent Client

Azureus implements the BitTorrent protocol using java language and comes bundled with many invaluable features for both beginners and advanced users.Azureus offers multiple torrent downloads, queuing/priority systems (on torrents and files), start/stop seeding options and instant access to numerous pieces of information about your torrents. Azureus now features an embedded tracker easily set up and ready to use.

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Web,Streaming,ftp or mail server Logs analyzer Using Awstats

AWStats is a free powerful and featureful tool that generates advanced web, streaming, ftp or mail server statistics,graphically. This log analyzer works as a CGI or from command line and shows you all possible information your log contains, in few graphical web pages. It uses a partial information file to be able to process large log files, often and quickly. It can analyze log files from all major server tools like Apache log files (NCSA
combined/XLF/ELF log format or common/CLF log format), WebStar, IIS (W3C log format) and a lot of other web, proxy,wap, streaming servers,mail servers and some ftp servers.

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Retrieving Emails From Remote Servers With fetchmail (Debian Etch)

Fetchmail is a program for retrieving emails from remote servers. Imagine you have five email accounts on five different servers. Of course, you do not want to connect to each of them to get your emails. This is where fetchmail comes into play. If you have a user account on a Linux server, you can make fetchmail download emails from remote servers and put them into just one mailbox (the one of your Linux user), from where you can retrieve them with your email client (e.g. Thunderbird or Outlook). http://www.howtoforge.com/debian_etch_fetchmail

Book

 What book will teach me 7.04 stuff?Thanks

Apache: Creating A Session-Aware Loadbalancer Using mod_proxy_balancer (Debian Etch)

mod_proxy_balancer is an Apache module that lets you create a loadbalancer. This loadbalancer retrieves requested pages from two or more backend webservers and delivers them to the user's computer. An important feature of mod_proxy_balancer is that it keeps track of sessions so that a single user always deals with the same backend webserver. http://www.howtoforge.com/load_balancing_apache_mod_proxy_balancer

nBox - Envision your network with nBox (Embedded Ntop)

The life of a systems or network administrator requires us to maintain an expansive understanding of our network infrastructure to more effectively manage it. Amidst volumes of complex data that some IT problems present and network management is no exception to these complications. Visual tools allow us to better see trends and make sense of the macro view of our networks. Ntop, nBox, nProbe are just the right FOSS tools that can help us gain greater insight. http://www.howtoforge.com/network_monitoring_with_nbox

Fixing a scanner broken by the Feisty upgrade

If you have been using a USB scanner and upgrade from Edgy to Feisty, you may find that your scanner no longer works.You can use this fix to solve your scanner problem.

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Filesystem Encryption Tools for Linux

Crypto filesystems keep your data safe – even if someone steals your computer.Linux offers a number of encrypted filesystem options – each with a different approach to the encryption problem.Encrypted filesystems may be overkill for family photos or your résumé, but they make sense for network-accessible servers that hold sensitive business documents, databases that contain credit-card information, offline backups, and laptops.

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Using Ruby On Rails With Apache2 On Debian Etch

This article shows how you can install Ruby on Rails (RoR) and integrate it in Apache2 on a Debian Etch system. Ruby on Rails is a web application framework which is rapidly gaining popularity among web programmers. It aims to increase the speed and ease with which database-driven web sites can be created and offers skeleton code frameworks (scaffolding) from the outset. Applications using the RoR framework are developed using the Model-View-Controller design pattern. http://www.howtoforge.com/ruby_on_rails_debian_etch

Howto Setup Dual Monitors with NVidia in Ubuntu

This tutorial explains how to setup Dual Monitors with NVidia in Ubuntu.It’s quite a pain to get dual monitors working your first time using Linux, however I hope this guide will make the process relatively quick and painless.

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Howto Change Default text editor in Debian Etch

By Default Debian Etch Provides the nano editor you need to follow this procedure.In this example i want to use vi editor as my default editor.This is Veryuseful if you want to change Default editor to your own choice.

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QoS And Traffic Shaping For VoIP Users Using iproute2 And Asterisk

The quality of my VoIP phone calls suffered whenever I was downloading or uploading anything. This was irritating, especially for those calling me (I heard them better than they heard me). So I poked at Iproute2 and other howtos, especially with regard to VoIP traffic, but I couldn't find anything that worked well. After some playing around, I've found settings that were right for me: consistant VoIP quality, regardless of any activities on the wire. http://www.howtoforge.com/voip_qos_traffic_shaping_iproute2_asterisk

Got

I got my free 7.04 cd in the mail saturday, and I bought a $30 'puter from goodwill. i got the net up on this using linux. I am still learning and installing stuff. Much cheaper than an MS machine with Vista.

Thanks Ubuntu!