Hack and / - Browse the Web without a Trace
Is privacy dead? When I think about how much information my computer and my gadgets output about me on a daily basis, it might as well be. My cellphone broadcasts my general whereabouts, and my Web browser is worse—every site I visit knows I was there, what I looked at, what browser and OS I use, and if I have an account on the site, it could know much more.
Even if you aren't paranoid (yet), you might want to browse the Web anonymously for many reasons. For one, your information, almost all of it, has value, and you might like to have some control over who has that information and who doesn't. Maybe you just want to post a comment to a blog without the owner knowing who you are. You even could have more serious reasons, such as whistle-blowing, political speech or research about sensitive issues such as rape, abuse or personal illness.
Whatever reason you have for anonymity, a piece of software called Tor provides a secure, easy-to-setup and easy-to-use Web anonymizer. If you are curious about how exactly Tor works, you can visit the official site at tor.eff.org, but in a nutshell, Tor installs and runs on your local machine. Once combined with a Web proxy, all of your traffic passes through an encrypted tunnel between three different Tor servers before it reaches the remote server. All that the remote site will know about you is that you came from a Tor node.
Tor works well on its own for anonymity, but anyone who has access to your machine can see that you have it installed. In some situations, even possession of anonymizing software might implicate you if you work in a company or live in a country where it is frowned upon. However, even in these cases, if you have a Knoppix disc, you quickly and easily can set up an anonymous Web browsing environment that will disappear once you reboot your computer. Because Knoppix boots and runs completely from the disc, any changes you make to it are stored in RAM and are erased once you reboot the machine.
First, you need a Knoppix disc. If you have a fast Internet connection, download a CD or DVD image from the official Knoppix site and then burn it to disc. Otherwise, look on the official Knoppix page for links to retailers who will ship you a Knoppix disc for a fee.
Next, boot your Knoppix disc. Knoppix should attempt to get on the network automatically, but if it doesn't, click K→Knoppix→Network/Internet for network configuration options. Knoppix has a sophisticated system that allows you to write to all areas of the filesystem as though it were installed on a hard drive. Because of this, you actually can install Tor on Knoppix according to the official directions on the Tor site. First, click K→Knoppix→Utilities→Manager software in Knoppix to start Knoppix's package manager. Then, click Reload to get the latest list of packages, search for the privoxy and tor packages, and select them for installation (or, if you want a shortcut, simply open a terminal and type sudo apt-get update && sudo apt-get install tor privoxy).
Now Tor will be set up and running, but Privoxy still needs a bit of extra configuration to use Tor. Open /etc/privoxy/config in a text editor, and add this line to the top of the file (don't forget the trailing dot):
forward-socks4a / 127.0.0.1:9050 .
After that, find any lines that look like the following and comment them out with a #:
logfile logfile jarfile jarfile
Finally, open a terminal and type:
sudo /etc/init.d/privoxy restart
And, Privoxy will be ready to use.
Although you could configure Iceweasel (Firefox's name on Knoppix) by hand to use Privoxy, there is a nice plugin created just for Tor. Open Iceweasel and go to https://addons.mozilla.org/firefox/2275 to install the Torbutton plugin. Once you install the plugin and restart Iceweasel, a button at the bottom right of Iceweasel will appear that says either “Tor Disabled” or “Tor Enabled”. Simply click the button to toggle the state, and the plugin will take care of the rest.
From here, you can browse the Web anonymously. If you have never used Tor before, it's worth noting that you might see a slowdown in performance, as your traffic does need to be encrypted and pass through three extra servers. Also, certain sites, such as Google, may appear in their German or Japanese versions, depending on which Tor node you exit through. Once you are finished, shut down the machine, and all traces of Tor, Privoxy and your browsing history will be erased.
Kyle Rankin is a VP of engineering operations at Final, Inc., the author of a number of books including DevOps Troubleshooting and The Official Ubuntu Server Book, and is a columnist for Linux Journal. Follow him @kylerankin.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.View Now!
|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- SUSE LLC's SUSE Manager
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Google's SwiftShader Released
- SuperTuxKart 0.9.2 Released
- Doing for User Space What We Did for Kernel Space
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide