Can't capture TCP with Wireshark
I've installed Backtrack 3 and I'd like to learn how to use Wireshark for academic purposes.
When I try to capture wireless traffic from my other computer linked to the Internet through an wireless ADSL router, I cannot see TCP or IP protocol packets in Wireshark, only a bunch of IEEE.802 and LLC protocols mostly.
I can't figure it out why. Wireshark is configured with the "decryption key", "promiscuous mode", and "assume packets have FCS" which I understood are the main parameteres.
Thank you fot your help.