I can't capture wifi packets on macbook using wireshark

asked 2021-11-11 23:32:20 +0000

eharo
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Hi guys, I'm using a macbook Big Sur version macos 11.6.1, and I can't capture any packet using my Wi-Fi en0 adapter. I don't need monitor mode to see radio packet headers, I'm interested only on data regular packets. There is no error when I start the capture on wireshark, however it says "No packets captured". The strange part is the I can capture packets with "tcpdump -i en0"... I can even do a "tcpdump -i en0 -w test.pcap" and later open the file with wireshark. Does anyone could help me with?

answered 2021-11-12 07:09:46 +0000

Guy Harris
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I don't need monitor mode to see radio packet headers, I'm interested only on data regular packets.

Make sure you turn monitor mode off (the Wi-Fi adapters on newer Macs require that you disassociate from a wireless network network in order to capture in monitor mode, otherwise it doesn't give you any packets). Select Capture > Options, look for en0 in the list, and make sure the checkbox in the Monitor column is not checked.

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Thanks Guy! Disabling the checkbox on the "monitor" column solved the issue!

eharo ( 2021-11-12 17:54:59 +0000 )edit

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