[Winpcap-users] RE:Problem with wireless captures

[Gianluca Varenni]

  ----- Original Message ----- 
  From: Hardik Shah 
  To: winpcap-users at winpcap.org ; gianluca.varenni at cacetech.com 
  Sent: Sunday, April 15, 2007 6:26 AM
  Subject: [Winpcap-users] RE:Problem with wireless captures


  Hi Gianluca,

  Thanks for the help.i have used SureCom wireless card to capture the data and i am using the same for the replaying.but i am not getting why wireless card is converting it as ethernet packets?

The standard windows driver for a wireless card does that. This is how wireless drivers work on Windows pre-Vista. And WinPcap captures what the wireless driver passes to it.

  a friend told me  that windows doesn't understand the wireless packets and the device driver internally convert all the wireless packets in to ethernet format and forward them to the upper layer.is it so?

Exactly. Or better, for ease of protocol development Microsoft decided that the wireless drivers had to export fake ethernet packets and manage all the control/management frames internally. This behavior changed in vista, and now vista wireless drivers can export native wireless frames.
Hope it helps
GV


  Thanks & Regards,
  Hardik Shah


  --------------------------------

  Hardik Shah
  mobile:- 9827634991
  phone:- +91-0731-2570516 


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