Hi Folks -
I now have a working proof-of-concept for the Penumbra Wireless network
available for download. This is VERY early code, here are the constraints:
- Linux only: Intel ipw3945 chipset only targetted right now.
- You have to patch your ipw3945 driver and the ieee80211 stack. It
could all have been done in the driver, but by spreading it between both
makes adding additional drivers simpler
- Just proving packet transfer, not file transfer yet
Well it is a proof of concept, not any kind of product. But here is
what you can do with it: if you have two patched ipw3945 laptops
associated to different WPA networks but in range of each other, you can
send and receive unencrypted packets between the two laptops from
usermode without affecting the WPA association or transfer or security
on either laptop. The packets are transmitted as SOCK_PACKET and
received as normal UDP to a specific port.
The current Usermode Daemon stuff is also provided to generate and show
received packets. I have documented how the patches work also on the
wiki along with the patches and code:
http://penumbra.warmcat.com
-Andy
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