[linux-elitists] wardriving without the driving

Don Marti dmarti@zgp.org
Sat May 12 20:47:43 PDT 2001


My 802.11b (WiFi for short) card came yesterday, so I decided to
pop it in and see if I had the right module to support it.  Naturally
I had to change some stuff in /etc/pcmcia/config to identify the new
2.4 Orinoco driver:

device "orinoco_cs"
  class "network" module "orinoco_cs"

card "Lucent Technologies WaveLAN/IEEE Adapter"
  manfid 0x0156, 0x0002
  bind "orinoco_cs"

(should I be using class "wireless" ?)

but not only did the module turn out to be the right one for the card,
it also turns out that I have some generous, or clueless, neighbors.

May 12 20:16:19 cannabis cardmgr[3657]: initializing socket 0
May 12 20:16:19 cannabis cardmgr[3657]: socket 0: Lucent Technologies 
WaveLAN/IEEE Adapter
May 12 20:16:19 cannabis cardmgr[3657]: executing: 'modprobe orinoco_cs'
May 12 20:16:19 cannabis cardmgr[3657]: executing: './network start eth1'
May 12 20:16:21 cannabis dhclient-2.2.x: DHCPDISCOVER on eth1 to 
255.255.255.255 port 67 interval 3

...more DHCPDISCOVERs snipped...

May 12 20:16:52 cannabis dhclient-2.2.x: DHCPOFFER from 192.168.1.1
May 12 20:16:54 cannabis dhclient-2.2.x: DHCPREQUEST on eth1 to 
255.255.255.255 port 67
May 12 20:16:54 cannabis dhclient-2.2.x: DHCPACK from 192.168.1.1
May 12 20:16:54 cannabis dhclient-2.2.x: bound to 192.168.1.102 -- renewal in 
259200 seconds.

Ooops, sorry folks, better put the card back in its box until I get to
some place with a WiFi net I'm allowed on.

Since WiFi's own security is kind of weak, I'm starting to think that
the residential gateway/webcache/nameserver/dhcp-server/etc device
should include something like one of those hotel Ethernet systems, where
it routes all your new connections to itself until you authenticate on
a web page. You could do it with a browser cookie, which would make for
rather painless web-surfing sessions if you did it right.

Or just never route the WiFi network out at all and make people do some
kind of tunneling to get out.

It would be fun to set up an anonymous WiFi-based Freenet dropbox
overlooking a crowded street or train station though. Walk through a
certain area with a node on a laptop in your backpack, and your stuff
gets out to the world.

-- 
Don Marti              "I've never sent or received a GIF in my life." 
dmarti@zgp.org            -- Bruce Schneier, Secrets and Lies, p. 246.
http://zgp.org/~dmarti/        (Free the Web: http://burnallgifs.org/)



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