Stumble across rogue wireless access points

Daily Newsletters

Sign up to ZDNet UK's daily newsletter.

Working with the results
When you run NetStumbler, all you wind up with is a list of access points and their locations. The real fun is taking those access points and mapping them. Start by making sure you've merged all your NetStumbler files into one large file, as described above. Figure B shows a partial listing of the access points that I detected in the Indianapolis area.
Figure B
Some wireless access points found by MiniStumbler, shown in NetStumbler
The next step is to convert the data in NetStumbler into a format that you can map. The conversion process takes two steps. The first is to export the data from NetStumbler by selecting File | Export | Summary and save the export file to your system. Next, connect to the NetStumbler Web site and select the option for MapPoint Converter. This brings you to a Web page that translates the summary file into a series of rows that you can then use to create a map using Microsoft MapPoint. Unfortunately, you can't read this file directly into MapPoint. You must first copy the results of the script into an Excel workbook. Once you've saved the Excel workbook, you can import the data into MapPoint. The results may look something like Figure C.
Figure C
Some Indianapolis wireless LANs mapped
Stumbling all around
NetStumbler and MiniStumbler are great tools for finding rogue access points, and for determining how far away your access points can be detected. After you find the rogue points on your network, you can determine a course of action. You can confront the user who has deployed the port and either secure it or eliminate it. You can also use a wireless sniffer to determine the type of traffic using the port to see if a spy or hacker is trying to access your network. After that, you can use the information to help law enforcement apprehend the culprit.
Have your say instantly in the
Tech Update forum. Find out what's where in the new Tech Update with our
Guided Tour. Let the editors know what you think in the
Mailroom.

Post your comment

In order to post a comment you need to be registered and logged in.

You can also log in with Facebook. Log in or create your ZDNet UK account below

  • Login

Will not be displayed with your comment

By signing up for this service, you indicate that you agree to our Terms and Conditions and have read and understood our Privacy Policy. Questions about membership? Find the answers in the Community FAQ

Get ZDNet UK's daily newsletter

Enter your email address to sign up

ZDNet UK Live

Freebies202

Duplicate comments are not made intentionally. Its very good to know that now you are keeping check on this problem because sometimes a commenter...

5 hours ago by Freebies202 on Microsoft fixes blog comments, speeds up blogs with open source
kevinmchapman

"the very significant number of users" and "many (most) of us" - you have no evidence for these statements. It is a fact that most users are saying...

13 hours ago by kevinmchapman on A tale of two distros: Ubuntu and Linux Mint
Marg Menzies Harrison

Another grammar faux pas is the improper use of "you". When sitting down down in a restaurant, for example, I get cringe when the waitress...

14 hours ago by Marg Menzies Harrison via Facebook on 10 flagrant grammar mistakes that make you look stupid
zdnetukuser

And NOW, folks, for Canonical's next trick... Kubuntu is late. Here's a pencil. Draw your own conclusions. cf.:...

15 hours ago by zdnetukuser on Linux Minterface
Moley

@kevinmchapman. The discussion here reflects the very significant number of users who really do like the traditional menu system and who wish to...

17 hours ago by Moley on A tale of two distros: Ubuntu and Linux Mint
kevinmchapman

Er, no... It is an efficient means of finding the application/file/setting you need in one place. The icons are a simply a fallback for when you...

18 hours ago by kevinmchapman on A tale of two distros: Ubuntu and Linux Mint
TerryRK

Isn't the provision of a text based search an admission by the developers that the mass of icons approach does not work? I don't need to use a...

20 hours ago by TerryRK on A tale of two distros: Ubuntu and Linux Mint
kevinmchapman

"Unity and GNOME 3 both abandon the old text-based cascading menus in favour of a graphical icon-driven system." Point truly missed. Both use a...

20 hours ago by kevinmchapman on A tale of two distros: Ubuntu and Linux Mint
TerryRK

whs001 - Thank you, I'm glad you liked the article. I absolutely agree with you on your first point. I should perhaps have made it clearer that...

20 hours ago by TerryRK on A tale of two distros: Ubuntu and Linux Mint
Dennis Nilsson

If we allow corporate interest to dictate the way our government circumvents due process against foreign entities then we should accept the same...

21 hours ago by Dennis Nilsson via Facebook on ACTA stumbles in Germany
GHar123

I totally dislike pirating of works, I fear that artists will be deterred from creating works if they think that they are going to get ripped off....

23 hours ago by GHar123 on ACTA stumbles in Germany
JCB33

How dare film makers, artists or anybody that invests in creativity stop us pirating their works for free. I want to be able to walk into my local...

1 day ago by JCB33 on ACTA stumbles in Germany
Moley

@GrueMaster. I prefer horses for courses rather than one size fits all. I, and I suspect most other computer users, do not really wish to have...

1 day ago by Moley on A tale of two distros: Ubuntu and Linux Mint
greycynic

The product that scares me every time I have to use it is the Office 2007 version of Excel. The first bug that I found was applying the median...

1 day ago by greycynic on Ten flawed products that derail productivity
GrueMaster

Nice review and very informative. One thing I'd like to add (in reply to whs001's 1st question), the main reason to have the same interface from...

1 day ago by GrueMaster on A tale of two distros: Ubuntu and Linux Mint
Frederick Wrigley

I'be been using Mint 12 since the RC came out, and I am far more happy with the Cinnamon, the Mate, and, yes (with extensions), theGnome 3...

1 day ago by Frederick Wrigley via Facebook on A tale of two distros: Ubuntu and Linux Mint
bdantas

Excellent article. One small correction, though--although a fresh installation of Linux Mint 12 will, indeed, provide the user with a version of...

1 day ago by bdantas on A tale of two distros: Ubuntu and Linux Mint
Alan Ralph

In related news, the ISPs club together to get the members of the Home Affairs Select Committee (ya goofed on that part, ZDNet UK) copies of "The...

1 day ago by Alan Ralph via Facebook on MPs urge ISPs to take down terrorist material
Alan Ralph

In related news, the ISPs club together to get the members of the Home Affairs Select Committee (ya goofed on that part, ZDNet UK) copies of "The...

1 day ago by Alan Ralph via Facebook on MPs urge ISPs to take down terrorist material
Moley

For Gnome 2 die-hards, it is possible to add icons to the bottom panel (or top top panel, if you prefer) which provide the exact Gnome 2...

1 day ago by Moley on A tale of two distros: Ubuntu and Linux Mint