"Linux is an excellent platform for network administration. If you want to monitor your network traffic, you can find many tools--some accessible from a Web interface, others using a graphical interface--but nothing beats the speed of the command line. Command-line tools are also useful in shell scripts, where they can help you perform complex tasks. Here's a handful of my favorites for monitoring network traffic.
"Atop is a system and process manager that displays network traffic, along with other useful information such as CPU consumption, memory usage, and a process list..."
