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Using a WRT54G (v5) for wardriving?

 
 
Ken Bessler
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      04-02-2006, 05:03 PM
Sorry if it's a dumb question but I'm curious if a WRT54G v5
router can be used for wardriving?

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73's de Ken KG0WX - Kadiddlehopper #11808,
Flying Pigs #-1055, Grid EM17io,
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Heath GD-1B, MP-1(X)antenna & HLA-150 amp.


 
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Jeff Liebermann
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      04-02-2006, 06:19 PM
"Ken Bessler" <(E-Mail Removed)> hath wroth:

>Sorry if it's a dumb question but I'm curious if a WRT54G v5
>router can be used for wardriving?


No. It has no client mode. V5 doesn't work with alternative firmware
that supports Kismet drone. Sorry.


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Jeff Liebermann (E-Mail Removed)
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Ken Bessler
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      04-02-2006, 09:13 PM

"Jeff Liebermann" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> "Ken Bessler" <(E-Mail Removed)> hath wroth:
>
> >Sorry if it's a dumb question but I'm curious if a WRT54G v5
> >router can be used for wardriving?

>
> No. It has no client mode. V5 doesn't work with alternative firmware
> that supports Kismet drone. Sorry.
>
> --
> Jeff Liebermann (E-Mail Removed)
> 150 Felker St #D http://www.LearnByDestroying.com
> Santa Cruz CA 95060 http://802.11junk.com
> Skype: JeffLiebermann AE6KS 831-336-2558


What firmware revision does do that? I may just sell my V5
on eBay and pick up an earlier model.....maybe...

73's


 
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Jeff Liebermann
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      04-03-2006, 04:39 AM
"Ken Bessler" <(E-Mail Removed)> hath wroth:

>What firmware revision does do that? I may just sell my V5
>on eBay and pick up an earlier model.....maybe...


WRT54G v1 thru v4 will work. Same with WRT54GS.
http://www.linksysinfo.org/modules.p...showpage&pid=6
There are also some other models that use the Broadcom chipset that
can run Linux. Note the list of serial numbers so you can identify
the hardware version without opening the box:
http://en.wikipedia.org/wiki/WRT54G

See:
http://www.dd-wrt.com
for my recommended Linux firmware.

Documentation page:
http://wrt-wiki.bsr-clan.de/index.ph..._Docu_%28EN%29

Feature list:

http://wrt-wiki.bsr-clan.de/index.ph...9#Feature_List

There's quite a bit on the web for setting up Kismet drone on a
WRT54G. Please note that Kismet Drone is not really intended for war
driving. It's major purpose is to build a network of sniffers that
can be interrogated from a central location. If you had a number of
WRT54G wireless routers running over a "campus" type area, you could
monitor all the "drones" at the same time. It will work with one
WRT54G, but is rather wasted.

I rather question why you would want to wardrive with a WRT54G. Using
Kismet from a laptop running one of the LiveCD distributions is just
as good. I suggest Security Auditor from:
http://www.remote-exploit.org/index.php/Auditor_main
Make sure your wireless card is supported:
http://www.remote-exploit.org/index....itor_dev_list1
Download the 600MByte iso image. Burn a CD. Boot it and use Kismet
to do your war driving. There are also a wide variety of Linux
wireless tools to keep you entertained.
http://www.remote-exploit.org/index.php/Auditor_tools



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Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
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KG0WX
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      04-03-2006, 11:47 PM
Thanks for the great info, Jeff - I just sold my v5 (for a $4 profit)
and got a new v4 (for $73). I'm a little surprised why you
question my using my router for wardriving, being a fellow
Ham and all. Let me explain it, though:

I've invested some money and considerable time building a
WiFi system. I have a hi performance laptop internal card
with 6dbd gain antennas and now I have a better router on
the way. I built a 16 element co linear antenna and mounted it
(with good coax) on a 30' pole.

I don't intend on driving around town with my router in client
mode - maybe wardriving was a poor choice of terms on my
part. I'm simply trying to get some real world numbers on the
results of my work. I'll find the various hotspots around here
with my laptop, come home and then put the router as a base
in client mode to see if it hears them too.

It's all just a fun study project for me..... I mean, all I have to
do to get online is enable my ethernet port on the thinkpad and
Boom! I'm online. No need for all this wireless stuff but then
again there is a park about 1/3rd of a mile from me and I could
go sit on a bench, drink a coke, read email and watch the
sunset. I guess this has a purpose, after all.....


Ken KG0WX

 
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Jeff Liebermann
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      04-04-2006, 01:26 AM
"KG0WX" <(E-Mail Removed)> hath wroth:

>Thanks for the great info, Jeff - I just sold my v5 (for a $4 profit)
>and got a new v4 (for $73).


Nicely done. V4 is a bit of an oddity. The stock Linksys firmware
allegedly has a 3MByte limit to uploading firmware. This means that
the standard version of DD-WRT might not fit. The recommended
proceedure is to upload the small version of DD-WRT, and then upload
the standard version. However, there have been reports that you don't
have to do this any more. I didn't want to risk turning a friends
WRT54G into a brick, so I did it the 2 step way.

>I've invested some money and considerable time building a
>WiFi system. I have a hi performance laptop internal card
>with 6dbd gain antennas and now I have a better router on
>the way. I built a 16 element co linear antenna and mounted it
>(with good coax) on a 30' pole.


Nice. I'm not a big fan of high gain colinear antennas because of the
combiner losses. Past about 12dBi, a dish is cheaper and easier to
build.

>I don't intend on driving around town with my router in client
>mode - maybe wardriving was a poor choice of terms on my
>part.


Yep. My comments are mostly why you would want to drive around with a
WRT54G on your vehicle roof, when a much simpler USB radio or antenna
will work as well.

>I'm simply trying to get some real world numbers on the
>results of my work.


You mean like signal strength and coverage area?

>I'll find the various hotspots around here
>with my laptop, come home and then put the router as a base
>in client mode to see if it hears them too.


Well, ok. That's interesting but not sufficient justification for
this exercise.

>It's all just a fun study project for me..... I mean, all I have to
>do to get online is enable my ethernet port on the thinkpad and
>Boom! I'm online.


Well, it's quite easy with a WRT54G running DD-WRT. You find the well
hidden site survey page and it will find all the hot spots. Then just
hit connect and you're on.
Status -> Wireless -> Site Survey
This is what you get:
http://802.11junk.com/jeffl/crud/dd-wrt-site-survey.jpg
If you hit "join", it messes up many of your settings by turning the
WRT54G into a client wireless bridge radio.

Or, you can do it from the telnet command line:
wl ap 0 (turn off access point mode)
wl scan (scan for access points)
wl scanresults (display results)
wl ap 1 (turn access point mode back on)

SSID: "Mariposa's Art"
Mode: Managed RSSI: -89 dBm noise: -99 dBm Channel: 6
BSSID: 00:0D:88:BF:5A:97 Capability: ESS WEP ShortPre ShortSlot
Supported Rates: [ 1(b) 2(b) 5.5(b) 11(b) 6 12 24 36 9 18 48 54 ]

SSID: "CMS"
Mode: Managed RSSI: -75 dBm noise: -93 dBm Channel: 11
BSSID: 00:11:50:0C:92:F7 Capability: ESS WEP ShortSlot
Supported Rates: [ 1(b) 2(b) 5.5(b) 11(b) 18 24 36 54 6 9 12 48 ]
WPA:
multicast cipher: TKIP
unicast ciphers(1): TKIP
AKM Suites(1): WPA-PSK
No WPA Capabilities advertised

>No need for all this wireless stuff but then
>again there is a park about 1/3rd of a mile from me and I could
>go sit on a bench, drink a coke, read email and watch the
>sunset. I guess this has a purpose, after all.....


I try not to think about it too much. Reality has a way of ruining
hobbies and adventures.

>Ken KG0WX


--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
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Ken Bessler
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      04-05-2006, 05:58 AM

"Jeff Liebermann" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> "KG0WX" <(E-Mail Removed)> hath wroth:
>
> >Thanks for the great info, Jeff - I just sold my v5 (for a $4 profit)
> >and got a new v4 (for $73).

>
> Nicely done. V4 is a bit of an oddity. The stock Linksys firmware
> allegedly has a 3MByte limit to uploading firmware. This means that
> the standard version of DD-WRT might not fit. The recommended
> proceedure is to upload the small version of DD-WRT, and then upload
> the standard version. However, there have been reports that you don't
> have to do this any more. I didn't want to risk turning a friends
> WRT54G into a brick, so I did it the 2 step way.


Enlighten me - how does uploading a smaller fw 1st make uploading
a larger fw safer? I plan on doing it that way - I'm just curious as to
why it needs to be done that way.

Ken


 
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Jeff Liebermann
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      04-05-2006, 07:24 AM
"Ken Bessler" <(E-Mail Removed)> hath wroth:

>
>"Jeff Liebermann" <(E-Mail Removed)> wrote in message
>news:(E-Mail Removed).. .
>> "KG0WX" <(E-Mail Removed)> hath wroth:
>>
>> >Thanks for the great info, Jeff - I just sold my v5 (for a $4 profit)
>> >and got a new v4 (for $73).

>>
>> Nicely done. V4 is a bit of an oddity. The stock Linksys firmware
>> allegedly has a 3MByte limit to uploading firmware. This means that
>> the standard version of DD-WRT might not fit. The recommended
>> proceedure is to upload the small version of DD-WRT, and then upload
>> the standard version. However, there have been reports that you don't
>> have to do this any more. I didn't want to risk turning a friends
>> WRT54G into a brick, so I did it the 2 step way.


>Enlighten me - how does uploading a smaller fw 1st make uploading
>a larger fw safer?


The stock Linksys firmware has a 3MByte firmware limit.
The mini version of DD-WRT does not have the 3MByte firmware limit.

The safety aspect is that there are reports that one can go directly
from the stock Linksys firmware to the standard version of DD-WRT.
However, the reports I read in the past didn't bother to mention from
what Linksys version, so I can't be sure if the version I have will
work.

See the muddle at:
| http://wrt-wiki.bsr-clan.de/index.ph..._the_WRT54GSv4

>I plan on doing it that way - I'm just curious as to
>why it needs to be done that way.


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Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
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KG0WX
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      04-05-2006, 01:12 PM
Oh, I get it - the stock fw has a limit of 3m and the DD-WRT is
bigger than that so you need to overwrite with the smaller file
which has no limit, allowing the 2nd upload of the full version.

Thanks for explaining that.

Ken

 
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