An Introduction To Using tcpdump At The Linux Command Line
Red Hat News, Friday, January 10th, 2025
In my experience as a sysadmin, I have often found network connectivity issues challenging to troubleshoot. For those situations, tcpdump is a great ally.
Tcpdump is a command-line utility that allows you to capture and analyze network traffic going through your system. It is often used to help troubleshoot network issues, as well as a security tool.
A powerful and versatile tool that includes many options and filters, tcpdump can be used in a variety of cases. Because it's a command-line tool, it is ideal to run in remote servers or devices for which a GUI is not available to collect data that can be analyzed later. It can also be launched in the background or as a scheduled job using tools like cron.