When you run tcpdump without any options, it will capture all the packets on all of the network interfaces on your computer. If it has not been installed yet, let’s run: $ sudo apt update $ sudo apt install tcpdump Capture packets on network interfaces To verify whether the tcpdump is installed or not, run the following command: $ tcpdump -version Install tcpdumpīy default, tcpdump is installed on most Linux distributions. This tutorial will show you the way to use the tcpdump command in a Linux system. It’s one of the most common networking utilities to troubleshoot network problems and security issues.Īlthough its name is tcpdump but it can be used to inspect non-TCP traffic included UDP, ARP, or ICMP. Tcpdump is a very useful command to inspect and capture network packets that go into and from your machine.
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