tcpdump

Tcpdump is a command-line tool used for network packet analysis. It allows users to capture and display data packets transmitted over a network in real-time. By running tcpdump, you can see detailed information about the traffic, such as source and destination IP addresses, protocols used, and the contents of the packets. This is useful for troubleshooting network issues, monitoring network performance, or detecting security threats. Essentially, tcpdump gives you a snapshot of what's happening on your network, helping you understand the flow of information and diagnose potential problems.