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Possible Duplicate:
Monitor Network Traffic on WPA

Is it possible to monitor/sniff wireless traffic of devices connected to your wireless network? Thanks

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marked as duplicate by nhinkle May 9 '12 at 9:10

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Yes you can use Wireshark

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Actually I am looking at it. But it shows only my local interfaces. – JSR May 9 '12 at 8:58
@JSR: See Lucas' answer. It is possible, but you need a suitable WiFi adapter. I recall the wireshark website covers this subject. – RedGrittyBrick May 9 '12 at 9:01
I have Motorola SBG901. Does it have some inbuilt support for this. – JSR May 9 '12 at 9:07
@JSR - Check the Wireshark website. – Ramhound May 9 '12 at 12:08
Unfortunately I am not able to find. Can someone point me to correct link? Device in my case is iphone. – JSR May 10 '12 at 2:52

Yes it is possible, you can do this:

get a WIFI antenna that is capable of putting itself in monitoring mode and then use wireshark/tshark to analyze and capture data.

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