When you launch Wireshark, a welcome screen displays a list of available network connections on your current device. In most cases, you will have more than one interface. 

To begin capturing immediately, you can select an active sparkline, shown as A in the Wireshark NG screenshot, and begin the capture. Alternatively, you can go to the Capture menu, and then go to Options. This will open the following window. Once in, there are a few key areas that will enable you to more effectively capture traffic: capturing in promiscuous mode, and using a capture engine, which we will discuss in the next section: