[Gllug] OT: Kindle Networking

[Alistair Mann]

Mick Farmer wrote:
>  Dear Alistair,
>
>  Yes, I assumed that I'd see TCP/IP traffic between Amazon and my
>  Kindle, but I didn't!
>
>  The experiment was as follows.
>
>  Internet<-->Router<-->Laptop (192.168.7.6) ^ | v Kindle (IP not
>  known?)
>
>  I'm running Wireshark on my laptop, which can see all traffic.  I
>  visit the Amazon Kindle e-book site and arrange to buy Oliver Twist
>  using 1-click, at no cost.  My Kindle is on and has settled down
>  (burst of LLC traffic).
>
>  I press the Amazon 1-click to buy and it arrives on my Kindle after a
>  couple of seconds.
>
>  I look at Wireshark.  No TCP/IP!  Just lots of LLC between
>  Netgear_9f:fd:9s (which is the MAC address of my Netgear router) and
>  Private_df:84:54 (which is the MAC address of my Kindle).
>
>  So, what gives?  As far as I can see, there's no IP traffic on my
>  internal network!  There's a little at the end, but that seems to be
>  between my router and my laptop updating the Wireshark information.

I'm assuming your laptop is wireless also. Are you sure you WS is using 
promiscuous mode? And if it is, that the underlying card can support it? 
Use a second device (cellphone, laptop, wii, whatever) to make a 
wireless connection to the Internet such that you can see its traffic first.

If you are wired to the router, it could also be that your traffic is 
segregated out in the manner of a switch rather than a hub -- go wireless.

Assuming you are wireless, and that your kindle is in fact using the 
wireless only (and not sneaking it down a 3G connection,) and you can 
see non-Kindle traffic from another device, and that you haven't 
accidentally filtered out the very traffic you want, my next step would 
be to set up your lapdog as its own wireless access point:
Internet <--> Router w/ disabled wireless <--> laptop  <..> Kindle
Such that the kindle connects to the laptop's wireless card, and the 
laptop forwards that traffic out the ethernet cable.

Cheers,
-- 
Alistair Mann









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