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What you do with the capture file and its contents is up to you.
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The screen shot below shows what this looks like in the CPA app: If you want to, you can change the file extension from wcap to pcap and you’ll be able to open the output file in other apps too, including Cocoa Packet Analyzer (App Store link) as well. Browsing the packet capture file through the command line will look like the following: This file can be viewed from the command line with tcpdump, or with an app like WireShark. Opening the WCAP / PCAP Capture File in Mac OS X wcap extension and include the time of the packet capture, the name should look something like “2017.04.20_17-27-12-PDT.wcap”. The captured packet file will appear on the desktop with a. When satisfied with the length of the packet capture, or when sufficient network traffic has been sniffed, click on “Stop” to end the packet trace and to save the captured packet file to the Desktop of OS X.Select the Wi-Fi Channel and channel Width to sniff and capture packets for, using the wi-fi network stumbler tool can be helpful to identify which channels and widths to sniff network traffic for, then click “Start”.
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