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There is two type of packets in the wifi network traffic, in one the source is one PC and the destination is a wifi router, in the other one the source is the router and the destination is the PC. In my case I have a wifi card in promiscous mode and when I start tpcdump or wireshark I can see the traffic from router to my PC and from the router to all other PC but I can't see the traffic from all other PC to router wifi, why?

asked 21 Nov '10, 15:44

alanp's gravatar image

alanp
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edited 21 Sep '12, 08:28

cmaynard's gravatar image

cmaynard ♦♦
9.4k1038142


Thanks Jasper, but I have linux ubuntu and the device is tp-link 
and is in promiscous mode.
I try to explain better:

Source ----> destination of packet

    PC ----> router wifi (I can't see this type of packet)
 My PC ----> router Wifi (I can see)
Router ----> single PC, single PC, 
             in example another PC of network. I can see this.

And then I can't see only packet that have as source 
another PC of the wifi network.
I can not understend why?
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answered 22 Nov '10, 16:10

alanp's gravatar image

alanp
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accept rate: 0%

edited 22 Nov '10, 16:15

This is probably another case of trying to capture WiFi data with a standard wireless card using a Windows operating system. For this kind of capture you need an Airpcap adapter as sold by Cace Technologies, or use linux instead. Otherwise you won't see the 802.11 layer and data from other stations, just your own.

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answered 22 Nov '10, 07:28

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Jasper ♦♦
23.8k551284
accept rate: 18%

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question asked: 21 Nov '10, 15:44

question was seen: 4,691 times

last updated: 21 Sep '12, 08:28

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