


tcpdump also gives us an option to save captured packets in a file for future analysis. It is available under most of the Linux/Unix-based operating systems. Tcpdump is a most powerful and widely used command-line packets sniffer or package analyzer tool which is used to capture or filter TCP/IP packets that are received or transferred over a network on a specific interface. Here, we are going to show you how to install tcpdump and then we discuss and cover some useful commands with their practical examples. This is our another ongoing series of packet sniffer tool called tcpdump. In this case, we are on Ethernet(eth0), so select the eth0 interface and click on the start capturing packets icon which is located in the top left corner.In our previous article, we have seen 20 Netstat Commands (netstat now replaced by ss command) to monitor or manage a Linux network. Once the GUI loads you can see several interfaces like Ethernet, Wi-Fi, Bluetooth, and so on, based on your connection to the network you can choose the interface and start capturing the network traffic. Wireshark is a GUI based tool, so once you click on the icon Wireshark GUI will open

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