tcpdump -i eth0 Capture only specific number of packets If you execute the TCPdump command with the “-i” flag you can name an interface and the TCPdump tool will start capture that specific interface packets for you. Capture packets from a specific interface Once the TCPdump tool is installed, you can continue to browse following commands. Install TCPdump on Debian and Ubuntu: apt-get install tcpdump Install TCPdump on CentOS: yum install tcpdump it’s available on every Linux flavor for free of course. TCPdump is a powerful command-line packet analyzer tool which used to capture or filter TCP/IP packets that received or transferred over a network on a specific interface. We are assuming that you have root permission, otherwise, you may start commands with “sudo”. In this tutorial, we’re going to bring you a popular network tool you should know about in order to correctly manage your networks.
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