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Wireshark is a great network protocol analyzer and open-source tool used for troubleshooting, analysis, and security testing of networks. It captures and displays data packets traveling across a network in real time. Users can inspect packet details and use this knowledge to assist them in diagnosing network issues and with monitoring traffic.
Using Wireshark, you can filter, and search based on protocols, addresses, or keywords to help in a more targeted analysis of the traffic flowing on a network. It supports research with numerous protocols including TCP, UDP, HTTP and more.
Wireshark is a very user-friendly application which has a good graphical interface which assists in displaying the packet information in an easy-to-read format which includes the source and destination addresses, packet timing, and even payload contents. Wireshark is used for many varied reasons and professions including network administrators, security professionals, and developers alike. It helps these (and others) to better understand network behaviors, troubleshooting connectivity problems and even assist in anomaly detection and/or security threats.
Bottom line is that Wireshark is a great and indispensable tool that will provide deep insight and network behavior for those looking to manage or secure networks.