WiFi UDP does not show up in wireshark

asked 2020-10-29 22:05:11 +0000

w8erdbob@gmail.com gravatar image

updated 2020-10-30 10:29:18 +0000

grahamb gravatar image

Running Wireshark on a Mac. Have a wifi lan with the Mac, a PC, A wireless router and 2 iPhones running Grandstream Wave software. Wireshark shows all the traffic except the phones, which is the most critical for me. The Wave info says they use UDP for voice etc. How can I get Wireshark to show the phones traffic?

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So you're seeing the traffic to and from the PC? If so, did you have to enter a network password into Wireshark to see the traffic?

And the phones are associated with the Wi-Fi network (they show the Wi-Fi icon at the top)?

Guy Harris gravatar imageGuy Harris ( 2020-10-30 00:24:32 +0000 )edit

Yes I see the PC traffic. No passwords in any devices. The phones show wifi at the top. The wireless router assigns ip addresses to all the devices, including the phones.


w8erdbob@gmail.com gravatar image[email protected] ( 2020-10-30 12:10:05 +0000 )edit

No passwords in any devices.

So you're saying your Wi-Fi network is unprotected, and has no password associated with it?

Guy Harris gravatar imageGuy Harris ( 2020-10-30 19:19:27 +0000 )edit

Yes. No passwords.

w8erdbob@gmail.com gravatar image[email protected] ( 2020-10-30 19:29:02 +0000 )edit

So if you:

  • turn the PC off, disconnect it from the wireless network, or put it to sleep, so that it's not generating any traffic;
  • disconnect the Mac from the wireless network, so that it's not generating any traffic - but don't turn the Wi-Fi adapter off;
  • try to capture, in monitor mode, on the Mac;
  • use the iPhones to both go to Web site and use the Grandstream Wave software to make calls;

what traffic do you see?

Guy Harris gravatar imageGuy Harris ( 2020-11-01 06:26:22 +0000 )edit