OS X Yosemite Has A Secret Packet Sniffer

  1. Open Wireless Diagnostics located in /System/Library/CoreServices/Applications/wireless diagnostics
  2. Press ⌘Command+6 or choose Window > Packet Sniffersniffermenu
  3. Choose a channel and frequencysniffer
  4. Click Start

Once you click Stop, a .wcap  file will be added to your Desktop.  You will need a program like Wireshark to read the file.  Wireshark can also capture packets, but it is interesting that Apple has added this function to Wireless Diagnostics.

3 Replies to “OS X Yosemite Has A Secret Packet Sniffer”

  1. There’s been a CLI wireless capture utility hiding in /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport since at least OS X 10.6. Nice (maybe?) that they’ve exposed it in the GUI.

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