DNS hijacking is an occurrence that sends fear into the hearts of man and beast. It takes a perfectly harmless (yet critical) process and turns it into a weapon for chaos and mayhem.

This tool, however, does not simply reside in the hands of people looking to maliciously redirect traffic for purposes I can’t quite fathom – I’ll admit, there is still some simple naivete in my Canadian mind.

Legitimate companies, ISPs, service providers also have this tool at their disposal for their own purposes. An useful and accepted version of this exists already in the form of content delivery networks (CDNs) and other third-parties who take a portion of a companies domain name space and use it to deliver distributed edge content and computing, web analytics, or advertising services.

But let’s move this inside the firewall or into the consumer ISP space. These companies provide DNS for millions of customers. As a result, they could easily re-write DNS entries to reflect their own needs rather than those of the consumer.

In the case of corporate IT networks, there is not much that can be done – they own the wire, hardware and software being used, so they will claim it’s part of the corporate IT policy that all employees sign and that will be that.

Consumers, on the other hand, should expect free and unencumbered access to the worldwide DNS network, without being intercepted or redirected by their own ISPs. And there is frankly no way to verify that this is not happening unless you run your own caching BIND server on your home network.

The alternate is to use one of the external third-party services (OpenDNS or DNS Advantage). But these services also provide Phishing and Filtering services, which means that they can easily modify and redirect an incoming request using the most basic and critical service on the Internet.

While this may sound like the rant of a paranoid, it is a concept that has practical consequences. As an organization, how do you know that you aren’t on the DNS filter list of these providers, or the ISPs? If they can filter and redirect DNS requests, what else are they doing with the information? Are they providing open and trusted access to the core DNS services of the Internet?

Stepping back as far as you can into the process of going to your favorite pages, you will find that you can’t get there without DNS. And if DNS can no longer be trusted, even from legitimate providers, the entire basis of the Internet dissolves.

For the last week, I have been using Ubuntu 8.04 (Hardy Heron) on my personal laptop. I can say that the experience has been mostly transparent for me, even with the need for a complete re-build last night after an attempt to install a complex theme replacement.

I can say that it has been transparent because I have been using Linux desktops in one form or another on an intermittent basis since 1999. When business was slow in the Fall and Winter of 2001/2002, I was the Guinea Pig in my organization to see if Linux could be a corporate replacement for Windows for all desktops and laptops.

So, when I say that the process has been transparent, you will have to realize that I have been a technical user of these desktop interfaces for a number of years. But I can say that since my first positive experiences with the Red Hat Fedora and the Ximian Gnome replacement interface, things have come a very long way.

Ubuntu 8.04 is the first real interface that seems to work predictably, efficiently, and effectively with external devices and programs that are business friendly. This is especially the case if most of the tools are Web-based, as Firefox and Opera work seamlessly. OpenOffice 2.4 can open DOCX files, and media players support most of the files I want to watch/listen to.

It prints to the home network printer.

It accesses the home file server.

I can share and synchronize files among my computers using DropBox.

Some caveats to my positive experience.

• I work mainly on the Web
• I do not play games
• I have been using Linux in various forms and editions since 1999.

If you have technically savvy friend, or really want to push and expand your knowledge of computers and highly configurable operating systems, I would definitely suggest giving Ubuntu a try on the extra computer you have lying around. My laptop is at least 3.5 years old, and not anywhere near as fast as my work laptop running XP. However, with Linux, the two are comparable in speed and performance.

Go on. Try it. I know you want to.