
If the switch that is currently serving your workstation doesn't support mirror or doesn't have an extra port, put a new, temporary switch between the workstation and the wall jack. Install Wireshark on a different, test workstation or laptop and connect it to the mirror port on the switch.

Way 2: Use a switch's "port mirror" function to send all of the traffic that normally goes to the workstation port also to a second port.

I don't recommend this because it's going to change the test environment. Way 1: Install Wireshark on the workstation. You'll need to have Wireshark (WS) be able to see the network traffic at the workstation's NIC. There's is a learning curve with Wireshark.
