Help with using dumpcap to monitor 24/7 but retain only 20 minutes

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dumpcap man page

Hello and thank you for this reply.

When you say to use dumpcap directly, do you mean from the Windows Command Prompt?

Is there a way to include in the dumpcap command I provided a filter to only capture my MAC address?

Thank you.

I've tried using this dumpcap command from Windows Command Prompt but I'm receiving a syntax error on the filter part:

dumpcap -i 1 -w E:\wiresharkLogs\32Scapture.pcapng -b duration:1200 -b files:5 -f "eth.addr==xx:55:44:33:2C:xx"

You're trying to use a display filter as capture filter, that doesn't work. Use ether host xx:55:44:33:2C:xx instead.

However in this case, rather than using this filter, I would use the `-p' option, see the dumpcap man page.

Thanks very much..this was the filter I needed to use.

For anyone else finding this post here is the full dumpcap I used to capture 5 pcapng files every 20 minutes:

dumpcap -i 1 -w E:\wiresharkLogs\capture.pcapng -b duration:1200 -b files:5 -f "ether host xx:55:44:33:2C:xx"