In this tutorial today, I’ll be demonstrating some low-level but terrifying utilities you can run on your compromised network. If you class="vt-p" href="http://www.makeuseof.com/tag/paranoid-monitoring-networks-comings-goings-wallwatcher-ddwrt">weren’t paranoid enough after I showed you class="vt-p" href="http://www.makeuseof.com/tag/crack-wep-network-find-insecure/">how to crack a WEP network in 5 minutes last week, you will be after today.

Prerequisites

• These apps will only work on a wifi network that is either open or has compromised WEP security for which you have the passphrase.
• class="vt-p" href="http://www.backtrack-linux.org/downloads/">Backtrack5 Security Linux Live-CD: if you’re unfamiliar with the boot process and how to get into a GUI, read class="vt-p" href="http://www.makeuseof.com/tag/crack-wep-network-find-insecure">last week’s tutorial on how to hack your WEP network.
• A wireless card that supports monitor mode (where it captures all the packets on the network).

Note: This isn’t the only way to sniff out packets on the wifi, but as far as I’m concerned it’s the easiest for beginners and consists of really only a few shell commands to see results. It certainly isn’t the most comprehensive or effective way to do things, and there are certain drawbacks and limitations I’ll discuss beside each utility.

Today we’ll be covering 3 different basic-level utilities for figuring out what’s going on: urlsnarf, webspy, and driftnet.

Setting Up

Boot into Backtrack5 as described last week. Before continuing, make sure you have the following information noted down somewhere:

• The BSSID (Mac address) of your target network.
• The NAME of your target network.
• The CHANNEL number that the network operates on (1-12).
• The WEP key (if needed).

Start by placing your wifi card into monitor mode on the specified channel, using:

airmon-ng start wlan0 [channel]

Replace wlan0 with the name of your wireless device - iwconfig will tell you this if you don’t know it already – and with the relevant [channel] in there too (don’t include the brackets). You should now have a mon0 interface for monitoring network traffic.

Since the packets need to be decrypted on the fly, we need to run them through the airtun-ng utility, which will give us a live stream of the decrypted packets as it sees them on the network, in a suitable format for some of the other apps we will use today. Type in the following command, replacing your details:

airtun-ng -a [bssid] -w [password] -t 1 mon0

Leave out the -wbit if you’re doing this on an open wifi network. You should see something similar to this if it’s successful.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/08/airtun-ng.png" alt="wifi monitoring software" width="496" height="77" />

The utility created a new network device stream called at0, which we need to activate using another command (open a new terminal for this, and don’t close the one running airtun-ng):

ifconfig at0 up

Okay, setup is complete, onto stage 2.

URLSnarf

This is going to list out all the websites visited by users on the network, so you can see in real time what sites they are browsing too.

urlsnarf -i at0

It’s also going to give a lot of noise though, as each website visited results in a number of requests being made to various places. Here’s a snapshot of me browsing the iTunes store. A quick look over the list will tell me:

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/08/reeder-urls.png" alt="wifi monitor freeware" width="580" height="246" />

• The user is on an IP address of 192.168.0.5 (useful for finding out more later)
• The request is coming from a 32GB model iPad.
• Exactly which URLs are being loaded.
• The user has gone through a number of mobile applications, like Mobile Safari, Reeder (a Google Reader app), and the iTunes store.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/08/itunes-ipad.png" alt="wifi monitor freeware" width="460" height="70" />

With multiple users it could become difficult to tell which requests are made by who, but there are additional filters I won’t get into. For now, this is scary enough.

DriftNET

This one is used to capture images that are being downloaded from websites and such, and it’s pretty much as voyeuristic as you can get.

driftnet -v -i at0

Note: -v isn’t needed, but it shows a textual output in the console window which I prefer to know it’s working or found something. It isn’t perfect by far – during tests I found it only tended to pick up smaller images, presumably because it wasn’t able to fully grab the packets for larger JPGs and such, but it is effective none the less. Here I’ve browsed to a famous Chinese movie streaming website.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/08/driftnet.png" alt="wifi monitoring software" width="580" height="283" />

It certainly doesn’t pick up everything, but I can assure you that if they’re browsing to a certain pR0n site thats begins with Red and ends with Tube, you’re going to know about it.

WebSpy

While I prefer the log file format of URLSnarf, this utility will actually attempt to mirror what the user is browsing on your computer. In practice it doesn’t work as well as I’d hoped, but it’s intriguing none the less. You need to target a specific user IP on the network though – which you should have through URLSnarf, then type in the following:

webspy -i at0 [target ip address]

In another terminal, launch Firefox using:

firefox &

Now, in theory, whatever they visit will be mirrored onto your local Firefox browser. In reality, I found it would open a new browser window for every request the website site made – so a site like MakeUseOf might open new tabs for the various advertisers, and Disqus commenting – added to which some sites would only open by IP address. Certainly good fun and some sites work as expected, but of limited real world use.

Conclusion:

Running these utilities on your own network to see who’s stealing your wifi and what they’re doing with it is probably acceptable, but once you start running these in public spaces (as someone did with class="vt-p" href="http://freegeekvancouver.blogspot.com/2011/06/another-hack-wiretap-picture-frame.html">this wifi picture frame that grabs traffic from open wifi spots), you enter a whole new realm of illegalities. Or do you? It’s actually quite easy to secure your traffic even on an open wifi by tunnel everything through a VPN or such, so I hope this just goes to show you exactly how dangerous WEP networks and open wifi can actually be. Think twice before jumping on that local “free internet” someone seems to be broadcasting for fun. I plan to explore some more wifi trickery over the coming weeks, so stay tuned and play safe people.

As ever, feel free to comment and ask questions, or head over to our support community for crowd-sourced advice and unrelated questions.

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The cash registers have been steadily “ker-chinging” since our T-shirt store first opened last year. We now have 10 designs, including some in baby tee size for the slim petite female readers among us. Some Mac OSX-related designs are currently being developed and we’ll be sure to let you know about them as soon as they become available!

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/05/tshirt_store.gif?54167" alt="" width="576" height="610" />

The price for each T-shirt is $16.95 and shipping to anywhere in the world. Each shirt is made of very high quality material and is well worth the money!  Mine have been through the wash countless times and they still look good! Why not buy in bulk and save on shipping costs? Just class="vt-p" href="http://splitreason.com/makeuseof">head on over to the store and see if anything strikes your fancy.

If you have already bought a MakeUseOf T-shirt, what did you think of it? Are you happy with your purchase?

Why not send us a photo of you wearing it and we may post it here on the site for all to see! />
/>Need Assistance? Ask questions to MakeUseOf staff and thousands of other readers on href="http://www.makeuseof.dev/answers/" target="_blank" >MakeUseOf Answers!

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href="http://www.makeuseof.com/tag/upgrade-wardrobe-check-makeuseof-tshirt-store/">Looking To Upgrade Your Wardrobe? Then Check Out The MakeUseOf T-Shirt Store! is a post from: href="http://www.makeuseof.com">MakeUseOf

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Instead of hassling your friends, you can browse Fiverr to find someone offering the right sort of services. You can even check out examples of their work and ratings from previous customers before you ask them to do the job. And when you make the deal, you’re only promising $5. It’s only as risky as asking a friend to do you a favour and promising a few drinks in return. How’s that for a great idea?

id="more-71513">

What’s Fiverr?

In short, class="vt-p" href="http://www.fiverr.com/">Fiverr is a marketplace, connecting people who have skills they’d like to sell for $5 with people who want small things done for $5. The $5 price point is crucial and leads to some fascinating offers.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/03/Fiverr-Splash.png" alt="fiverr marketing" />

Sign-up is quick, directly through Fiverr or even quicker with a Facebook login.

What Do People Sell for $5?

On Fiverr, there are people selling Photoshop skills, offering to draw pictures for you, offering to post postcards from a particular country, offering virtual assistant duties, posting special family recipes, singing happy birthday, offering critiques of websites, giving tourist advice of their local area, songwriting, giving industry advice, writing your name in Chinese calligraphy or elvish, taking photos of messages in coffee froth, proofreading and all sorts of other random offers.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/03/Travel-Fiverr.jpg" alt="fiverr review" />

Browse by popularity, rating or the type of service and you’ll get a feel for the variety of skills available on Fiverr. The ideas are wild and varied — some of them are so unexpected! Browse away and you’ll find yourself thinking “Hey, that would be cool. Yeah, I’d pay $5 for that!”.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/03/Random.png" alt="fiverr review" />

If you do want to buy someone’s services, Fiverr links into PayPal to make payments simple.

What If No-One Offers The Skill I Want?

If no-one’s offering the service you’re after specifically, you can also advertise as a buyer in need of that service. To do this, look for “Request Gigs” in the right-hand column. Say what you’d like done for $5 and see if anyone takes you up on your offer.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/03/Request-Gigs.png" alt="five dollar marketing" />

What Could You Sell For $5?

As you’ve seen, there are many possibilities as to what you can sell through Fiverr. What is clear though, is that people selling their skills must quantify exactly what they will do. For example, “I will proofread one essay under 2,000 words within three days”. If you don’t specify how long the essay, how many essays you will proofread or how long you will take, things will get confusing for the buyer. Also be careful if you’re offering to post things — think of how much it would cost to post worldwide before you offer!

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/03/Weird.png" alt="five dollar marketing" />

It seems as if some sellers are trying to undercut others by offering to do an incredible amount of work for their $5 fee. That sort of thing happens everywhere — just don’t buckle to the pressure if you think you’re worth more (which you are). Browse the site thoroughly as there are some very imaginative offers out there which would be quite useful for the buyer and yet easy for the seller to do. Let them inspire you into profitable ventures.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/03/Create-first-Gig.png" alt="five dollar marketing" />

At the top of most pages in Fiverr is a box where you can offer your services for $5. Start there and it will allow you to add more details in the next page, including specifics and an example picture. They also make it easy for you to share your Fiverr service offers with your friends on Facebook, Twitter or elsewhere.

class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2011/03/I-will-for-5.png" alt="fiverr marketing" />

What Else Might You Use?

Obviously, class="vt-p" href="http://www.fiverr.com/">Fiverr isn’t the only online class="vt-p" href="http://www.makeuseof.com/dir/tag/marketplace/">marketplace for services in the world. There are many other ways you could solicit services or offer your services for hire online. The Facebook Marketplace is one of the simpler examples, followed by Craigslist. Any freelancing marketplace shows some similarity to Fiverr, eg. class="vt-p" href="http://www.makeuseof.com/dir/peopleperhour-freelance-marketplace/">PeoplePerHour or class="vt-p" href="http://www.makeuseof.com/dir/microworkers-complete-small-tasks-earn-money/">MicroWorkers. Also worth considering are the other tools listed in this article on class="vt-p" href="http://www.makeuseof.com/tag/easy-money-for-teens-online/">how teens can make money online.

Despite all these similar market options, Fiverr still has a unique selling point – that is, the $5 price tag. This encourages both the buyers and sellers because it’s an appealing amount.

What is the best service you’ve seen on class="vt-p" href="http://www.fiverr.com/">Fiverr? Have you found it easy to use? What do you sell through Fiverr? Let us know in the comments! />
/>Do you like MakeUseOf articles? Don’t forget to target="_blank" href="http://www.makeuseof.dev/tag/share-share-share-spread-word/">share our articles with others! It’s really important to us. />
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Now, the sheer amount of people and data available on Facebook is something you can use to your advantage. You might be looking for a job or you are interested in trends. So how do you obtain the information you’re looking for and make the right connections? You (re)search.

This article will provide some ideas for searching Facebook and finding specific information.

id="more-56684">

1. Search Multiple Terms Simultaneously

You can search Facebook for two, three, four, or more things at once by adding the “|” sign (minus the quotation marks) between the terms. For example “MakeUseOf | Lifehacker” will give you the result pictured below. This way you can see results of terms you want to compare on a single page.

style="text-align: center;"> class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2010/10/FacebookSearch02.png" border="0" alt="facebook search " />

2. Specify Your Search

This may seem pretty obvious, but wait ’till I get there. You can display different types of results by clicking the categories listed to the left. OK, that was kind of obvious. Now note that the list also features an option to only search for posts by your friends or from everyone, i.e. all over Facebook.

And that’s where it gets interesting, as you can now filter the results by language and post types. This is perfect if you’re looking to hook up with people from a certain area or just find local information.

style="text-align: center;"> class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2010/10/FacebookSearch04.png" border="0" alt="facebook people search" />

3. Facebook App: class="vt-p" title="Advanced Search 2.2. beta" href="http://www.facebook.com/advancedsearch">Advanced Search 2.2 Beta

Using Facebook apps you can fill a specific niche. The Advanced Search app improves your search options within Facebook. It adds several new categories and search options. For example you can search for applications and have the results sorted by ‘most fans’ or ‘relevance’.

style="text-align: center;"> class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2010/10/FacebookSearch03.png" border="0" alt="facebook people search" />

4. Website: class="vt-p" title="FacePinch" href="http://facepinch.com/">FacePinch

FacePinch is a real-time Facebook search engine. So if you’re wondering what is being said right now about say Justin Bieber, this is where you would find out. The site also keeps an eye on trending topics and popular searches.

style="text-align: center;"> class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2010/10/FacebookSearch05.png" border="0" alt="facebook people search" />

To use either Facepinch or the following website, Openbook, you do not need to own a Facebook account. They are open to the public.

5. Website: class="vt-p" title="Openbook" href="http://youropenbook.org">Openbook

At Openbook you can basically do the same as on FacePinch, with one little difference. You can discriminate between updates from guys, girls, or all genders. So if you were interested in female opinion only, that would be the place to check it out.

style="text-align: center;"> class="aligncenter" src="http://main.makeuseoflimited.netdna-cdn.com/wp-content/uploads/2010/10/FacebookSearch06.png" border="0" alt="facebook search" />

The idea behind Openbook was to make people aware of what they put online and that there are consequences. Their tagline is “Facebook helps you connect and share with the people in your life. Whether you want to or not.” Next to it is a button that says “Learn why this is bad!” If this made you think, be sure to check out our security-related Facebook articles listed below.

We have previously shown you how to search and find people and pictures on Facebook:

• class="vt-p" title="Tips for Effective People Search on Facebook" href="http://www.makeuseof.com/tag/7-tips-effective-facebook-people-search/">7 Tips For Effective Facebook People Search by Mahendra
• class="vt-p" title="Effective Picture Search on Facebook" href="http://www.makeuseof.com/tag/ins-outs-effective-facebook-picture-search/">The Ins & Outs Of Doing An Effective Facebook Picture Search by Steve

Facebook is no longer a playground for only college kids. It has become an important marketing tool for businesses and private people alike. Now that you know what type of data is easily accessible, you should be even more careful about what information you release about yourself.

If you’re worried about people finding out stuff about you through Facebook, make sure you look over your privacy settings. These articles will shed some light on the matter:

• class="vt-p" title="Protect your Privacy on Facebook" href="http://www.makeuseof.com/tag/protect-privacy-facebook/">6 Simple Tips To Protect Your Privacy on Facebook by Brett
• class="vt-p" title="Regain Control over your Privacy on Facebook Pt1" href="http://www.makeuseof.com/tag/8-steps-to-regain-control-of-your-facebook-privacy-part-1/">8 Steps To Regain Control Of Your Facebook Privacy (Part 1) by Mahendra
• class="vt-p" title="Regain Control over your Privacy on Facebook Pt2" href="http://www.makeuseof.com/tag/8-more-steps-to-regain-control-of-your-facebook-privacy/">8 MORE Steps To Regain Control Of Your Facebook Privacy (Part 2) by Mahendra

What is your experience with finding things on Facebook? Has it changed your life? />
/>Do you like MakeUseOf articles? Don’t forget to target="_blank" href="http://www.makeuseof.com/tag/share-share-share-spread-word/">share our articles with others! It’s really important to us. />
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