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Change Monitor Mode Channel on Mac OS Big Sur

asked 2021-01-25 09:40:56 +0000

AlahambraOligododo gravatar image

updated 2021-01-25 09:42:08 +0000

I try to record a 5GHz wireless network on channel 36 using Wireshark 3.4.2 for Mac (Intel) using Rosetta 2 for Mac OS Big Sur on an Mac Book Air (M1 processor).

The monitor mode is available, however, I can only find packages on 2,4GHz and channel 1. I do not find any settings to change the channel to be recorded. I also tried this instruction: link text

Does anybody know how to change the channel of the monitor mode?

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answered 2021-01-25 10:47:20 +0000

AlahambraOligododo gravatar image

As a MAC beginner I now found the following solution:

  1. Using "Finder" press "command+shift+G" and look for the "/System" folder.

  2. Follow the following path: /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport (In my case I had the problem that the path did not look -exactly- as proposed by some internet instructions, so I couldn't copy paste the given links...)

  3. Double click on "airport". The program will be executed in the terminal. Copy the path.

  4. Type "sudo" to the terminal to get root rights, paste the path to the terminal an add "-c36". It will look like this "sudo /System".../airport -c36".

  5. Press enter, type your passwort and you hopefully have changed to monitor mode channel.

(Post is based on https://osxdaily.com/2007/01/18/airpo...)

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Have seen Airtool? Much simpler if it works in your environment - don't know if the new processor is a problem or not.

The early version was free and I could still find via google.

Bob Jones gravatar imageBob Jones ( 2021-01-25 11:16:49 +0000 )edit

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Asked: 2021-01-25 09:40:56 +0000

Seen: 309 times

Last updated: Jan 25