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Forum Thread Details
  • Replies 3 replies
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  • tshark
  • raspberry pi
Related

RPi and tshark (-T fields?)

tonnyvivas
tonnyvivas over 8 years ago

Hello, I'm new with tshark and I'm trying to use tshark to see MAC addresses and their rssi or tx power, but can't seem to find the proper field name:

the command I'm using is:

sudo tshark -S -l -i wlan1 -Y 'wlan.fc.type_subtype eq 4' -T fields -E header=y -e frame.time -e wlan.sa -e wlan.sa_resolved -e wlan_mgt.ssid

And I get:

frame.time wlan.sa wlan.sa_resolved wlan_mgt.ssid

Jan  3, 2017 12:25:03.048773000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

Jan  3, 2017 12:25:03.069641000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

Jan  3, 2017 12:25:03.092482000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

Jan  3, 2017 12:25:03.155865000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

Jan  3, 2017 12:25:03.362698000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

Jan  3, 2017 12:25:03.383152000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

Jan  3, 2017 12:25:03.426263000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

Jan  3, 2017 12:25:03.496762000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

Jan  3, 2017 12:25:03.517186000 EST b8:27:eb:1a:d3:2f Raspberr_1a:d3:2f

 

 

I've tried: (with no luck)

chan.chan_tx_pow

wlan.dbm_antsignal

wlan.antenna

wlan.normrssi_antsignal

wlan.rawrssi_antsignal

wlan.signal_strength

wlancap.dbm_antsignal

wlancap.ssi_signal

 

 

Could anyone help me out?

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  • clem57
    clem57 over 8 years ago

    Have you read the man page? https://www.wireshark.org/docs/man-pages/tshark.html

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  • jfst
    jfst over 8 years ago in reply to clem57

    maybe these are helpful:

    https://ask.wireshark.org/questions/18484/viewing-rssi-value-in-wireshark

    https://www.wireshark.org/docs/dfref/p/prism.html

    showing:

    prism.did.rssiRSSISigned integer, 4 bytes1.6.0 to 2.2.3
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  • shabaz
    shabaz over 8 years ago

    Hi Tonny,

     

    Are you sure this is supported with your hardware? (i.e. have you seen anywhere that people have done this with your hardware, e.g. Pi 3, or Pi 2 and a WiFi USB dongle, or whatever hardware you're using, or is this

    something new you're trying)?

    (What you're doing is not just RPI and tshark, which will work for IP of course, over WLAN, but you're wanting to look at WLAN control-plane).

    It might or might not be supported with the Pi 3, unfortunately I don't know, and I couldn't find a resource online concerning this with Pi.

    If it doesn't work with the Pi 3's wireless hardware, you could try a third party WiFi USB device. If you're going to do that then you will need to check (perhaps on tshark forums) if it will work for 802.11 control-plane

    snooping with Linux. If this is supported, then it is likely to work on the Pi too.

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