Basic suggestions requested for initial war driving from home

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I will state outright that I'm very interested in *learning* how to  
connect to whatever is (randomly) connectible within range of my home  
WiFi.

I don't yet know *what is connectible* around my house (i.e., what is  
wide open) - but that's what I want to find out.

To that end, I just bought a 2.5 GHz Ubiquiti Nanobridge M2:
 http://dl.ubnt.com/datasheets/nanobridgem/nbm_ds_web.pdf

Googling, it looks like my amplification will be about 41 dB (about 13  
times), given these average numbers from the spec sheet:
1. Transmit power = ~23 dBm (200 mW)
2. Antenna focus/amplification = ~18 dBi

Googling, I see "Jeff L." says they lie, so let's just assume 10X
for now, which should be good enough to pick up *something* on the  
radar around my home.

Since, "Jeff L." says the sensitivity is just as important, the figures  
seem to be (depends greatly on the channel) about:
3. Receive sensitivity = ~90 dBm

So, given I don't know all that much (but I've googled a bit) about
"war driving" (although I want to do so from home), what else do I  
need to buy or download in order to begin my home survey to find what
I can connect to randomly (presumably only open WiFi radiations)?


Re: Basic suggestions requested for initial war driving from home
On Tue, 23 Jul 2013 18:26:38 +0000, Lin wrote:

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I should mention that I'm on Linux and I've installed (but not yet
used) the following freeware:

 $ sudo yum install kismet (installed /usr/bin/kismet)
 $ sudo yum install wireshark (no executable was installed though)
 Note: I could not find a netstumbler repository for CentOS.

Q: What other software is recommended for seeing what I can connect
   to (i.e., wide open WiFi access points) from home?


Re: Basic suggestions requested for initial war driving from home
On 7/23/2013 12:51 PM, Lin wrote:
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any device with wifi should do.
pda cellphone laptop
I use a dell axim x51v for such things.

Re: Basic suggestions requested for initial war driving from home

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No. You need a device that has monitor mode. [I used to think  
promiscuous mode was required, and I probably have posted that a few  
times. However, what you need is monitor mode.]

The Alfa tube-u with the N connector on it is excellent. The chipset has  
monitor mode.
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plus this antenna
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You do not want to use netstubler. Use Kismet.




Re: Basic suggestions requested for initial war driving from home
On Tue, 23 Jul 2013 22:27:16 -0700, miso wrote:

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I am always confused which is needed, monitor or promiscuous!

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A friend gave me a Ubiquiti Bullet M2 yesterday.
It came screwed onto a 14 dBi flat planar antenna, which I might  
replace with a lower-range but wider-area dipole for convenience.

This datasheet indicates it uses the Atheros chipset (MIPS 24KC, 400MHz),
http://dl.ubnt.com/datasheets/bulletm/bm_ds_web.pdf

So Pooh's Atheros driver web site should be useful:
http://madwifi-project.org/wiki

At 23 dBm to 28 dBm transmit power with the 14 dBi antenna, my EIRP  
should be roughly 40 dB with a sensitivity able to pick up signals
as low as -75 dBm to -83 dBm.

That should pick up some open access points within a few miles,  
don't you think?

Re: Basic suggestions requested for initial war driving from home
On 7/24/2013 10:10 AM, Lin wrote:
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I guess this all depends on how you define war driving. I view it as a  
passive event. I just monitor and log. That said, I again repeat myself,  
your chip set needs monitor mode to do a passive scan.

Now if you are going to use some open wifi, then there is no need for  
stealth, so just about any adapter will work.

I don't like those parabolic reflectors. They don't travel well. They do  
work. I was given an old MDS antenna. I prefer panel antennas. My panel  
antenna is in the car, so I don't have the model handy, but I think it  
does 16db. That will do about 5 to 8 miles with the alfa tube-u. This is  
in an environment without a lot of other signals.

As a FYI, there is a lot of wifi out there that will not show up on  
netstumbler. Utility companies have wifi interfaces to access  
transmission line telemetry. The railroads have wifi for reasons I don't  
recall. The backhaul often doesn't transmit a SSID.

If you really want to do a site survey, you need kismet. If you want to  
borrow some wifi, netstumbler will do. I'm not sure netstumber will pick  
up idle wifi clients. That is, any device that has a list of site to  
quick connect will be broadcasting to find those sites.



Re: Basic suggestions requested for initial war driving from home
On Tue, 23 Jul 2013 23:33:12 +0100, p-0''0-h the cat (ES) wrote:

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Hello Pooh,

I read that page, and it appears to contain an advanced WiFi driver
for Atheros chipsets.

I presume the reason is that these advanced drivers might be able
to be set in promiscuous mode?

If so, having no idea what *my* wifi driver chipset was, I ran:
 $ /sbin/lspci -knn | grep -i network
which revealed an Intel chipset (and not Atheros) starting with 03:00.0.

$ /sbin/lspci -vv -s 03:00.0 | grep driver
revealed the driver currently being used is iwlwifi.

$ $ /sbin/modinfo iwlwifi | grep filename
revealed the location and file name of the driver:
/lib/modules/<linux kernel path>/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko

Am I correct in guessing that the advanced WiFi drivers are so that
we can better control an (Atheros) chipset for wardriving purposes?


Re: Basic suggestions requested for initial war driving from home
On Wed, 24 Jul 2013 09:46:49 +0100, p-0''0-h the cat (ES) wrote:

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I just realized that the external antenna I am contemplating
buying uses Atheros chipsets (as do many wifi radios); so your
wonderful site for Atheros drivers may still come in handy.

I will bookmark that site for future use!

Thanks - and - you're very intelligent - which is something  
that's appreciated!


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