Jkx@home » Software http://www.larsen-b.com Titanium Exposé Fri, 31 Oct 2025 02:15:37 +0000 en-US hourly 1 http://wordpress.org/?v=3.5 Kismet + GPSDrive + MySQL + Python = Google Earth Wlan Map http://www.larsen-b.com/Article/212.html http://www.larsen-b.com/Article/212.html#comments Thu, 18 Aug 2005 13:49:44 +0000 admin Continue reading →]]> Last week I decided to build a map of the wireless access point in the Town. It is not really easy to find the right tools, so I decided to write this little Howto.

To archive this goal you need severals tools:

Kismet

First install Kismet. You need a wireless card that support RFMon in monitor mode. I think Madwifi cards, and patched Orinoco are the only ones that support this.

Launch Kismet, and now check for a given AP that kismet know the best level..

If everything is ok, edit the kismet config file and set gps=try

GPSDrive

Download and install the latest CVS version of GPSDrive (I have some issues with the latest tgz and kismet). The next step is to have a GPS working with gpsd. Most GPS will work, I bought a cheap one with a USB cord on ebay.

Simply launch gpsd, and after gpsdrive. You should see the reception level in GPSDrive.

MySQL

To use Kismet + GPSDrive, you need to have a MySQL database. In fact GPSDrive will ask to kismet the new APs, and dump this informations in a MySQL db. You can find the create.sql in GPSDrive sources.

mysql -u root -p < ./create.sql

This will add a user : gast / gast

First try

Ok, now launch GPSDrive and set the ‘use SQL’ (or edit the config file), and quit.

Now to start the whole stuff:

  • Plug the wireless antenna (this is better for wardriving ;)
  • Plug the GPS
  • Launch gpsd (be carefull to have enought satellite in view)
  • Launch Kismet (it should tell you, it find the GPS…)
  • Launch GPSDrive (it should display a little kismet logo on bottom)
  • Now, you’re ready to go, walk down the street you should see new APs on the GPSDrive map.
http://www.brest-wireless.net/albums/Misc/full_gpsdrive.sized.jpg

After the trip: Google Earth

Ok, now you have a lot of points in your database.. And GPSDrive have a little troubles to display them.. After a little time, i decided to install Google Earth, and look at the way to add new points on the map..

This, is quite simple, all i need to do is to extract data form the SQL, and build a xml file that contain all the points. I decided to write gpsdriveToGoogleEarth.py. This quick and dirty script will generate a file ‘ap.kml’. Now simply launch Google Earth and open this file. You will see something like this:

http://www.brest-wireless.net/albums/Misc/google_earth.sized.jpg

The main issue for me, is that Google Earth doesn’t support Linux right now so I need to dual-boot.. But this provide a easy way to build the card without too much pain. And i can share the Google Earth file others guys simply.

WARNING

I do this only for the fun, so don’t try to hack wireless access point using this howto, this is not the goal !

– Enjoy

]]> http://www.larsen-b.com/Article/212.html/feed 38 Gtk-Womitor 0.2 http://www.larsen-b.com/Article/174.html http://www.larsen-b.com/Article/174.html#comments Mon, 25 Oct 2004 23:29:40 +0000 admin Continue reading →]]> Ok the name, is funny .. But I decided to write a little app to monitor my wifi signal level.

/static/gtk-womitor.png

The code is too ugly right now, I need to add noise, signal .. and a better OO API. Anyway, it tooks me 2 hours to write this, and that’s why I like Python.

Update

I spend a little time tonight to clean the code and add this to the SVN. So you can find this program at here

I switched to another card, as I’m usually working w/ a broadcom and ndiswrapper which don’t provide noise, and level information. This graph is done with a NetGear (prism54g based card). I’m still wondering why the noise has a so strange graph ??

]]> http://www.larsen-b.com/Article/174.html/feed 4 Slow bridging the Wifi http://www.larsen-b.com/Article/57.html http://www.larsen-b.com/Article/57.html#comments Thu, 27 Nov 2003 20:20:43 +0000 admin Continue reading →]]> In fact, i’m trying to turn my Wifi gateway (which is really a gateway 2 interfaces + masquerading ) in a transparent bridge. You know only have a single IP for the two interfaces, so going on the wired networks and back won’t be masquerade. In fact until now i can’t access to the Wifi network from the wired one.

So i give it a try to Ethernet Kernel Bridging:

# unsetting devices
ifconfig eth0 0.0.0.0
ifconfig eth1 0.0.0.0

# adding bridge / and ifaces
brctl addbr br0
brctl addif eth0
brctl addif eth1

# configure the bridge
ifconfig br0 192.168.1.20
route add default gw 192.168.1.1

Besides it’s works .. connecting to the wired from the wifi with ips in the same network. it’s slowww.. really tooo slow.

I need to look at this.

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