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How can I scan/record IP requests from a specific application. The less extra software and less GUI, the better.

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up vote 1 down vote accepted

You need a packet sniffer.

There are plenty of options, but your best choice depends on your specific needs. If you only want to see the connections, then TCPView or CurrPorts will do the trick.

If you want to actually capture/see the data, then you need something a little more heavy-duty.

  • WireShark is the perennial favorite and quite powerful, with lots of options.
  • Microsoft’s own Network Monitor, is also powerful, but is not the easiest to use.
  • My own go-to sniffer is SmartSniff because it is extremely easy to use, especially for quick capture/monitor sessions, and it has a minimal interface.
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