In: Computer Science
Wireshark is cross-platform or simply an open-source packet analyzer software. It is used as an educational purpose for the network troubleshooting, its analysis, development of software, and communications protocol. It was formerly known as Ethereal which helps capture packets in real-time and displays them in a human-readable format.
a. Yes, You Can you live capture from many different network media using Wireshark. That's what Wireshark functionality is.
b. After the successful installation of Wireshark, you can launch it and double-click the name of a network interface under Capture to start capturing packets on that network. As soon as you click the interface’s name, you’ll see the packets start to appear in real-time and Wireshark captures each packet sent to or from your system. Click the red “Stop” button near the top left corner of the window when you want to stop capturing traffic. This way packets are captured and further monitored for Analysis.