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Why can’t I capture 802.11n data packets?

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I have two ralink wireless cards (2860) with 802.11a/b/g/n support. I have put these (2 computers) in adhoc mode. I have an atheros (ath9k) wireless card which is in monitor mode listening in the same channel as adhoc network. I can see beacon and acknowledgements getting exchanged, but I am not able to see data packets which are being exchanged in Wireshark. Is there any special configuration that needs to done to capture data packets?

asked 24 Jan '12, 13:06

shashankks's gravatar image

shashankks
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accept rate: 0%

edited 24 Jan '12, 13:57

multipleinterfaces's gravatar image

multipleinte...
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One Answer:

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Does "not able to see data packets" mean "your capture has no packets where the IEEE 802.11 header says it's a data packet" or does it mean "your capture has packets where the IEEE 802.11 header says it's a data packet but they're just decoded as IEEE 802.11 packets - not TCP, not UDP, not ARP, etc."?

If it's the latter, then see my answer to this question.

answered 06 Oct '12, 18:05

Guy%20Harris's gravatar image

Guy Harris ♦♦
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accept rate: 19%