Atop vs tcpdump

Atop

System & Hardware

Atop is an open-source monitoring tool for monitoring and managing various server resources like CPU, memory, disk, network and processes. It can monitor in real-time and also log data for long-term analysis.

tcpdump

Network & Admin

tcpdump is a command-line network monitoring and data acquisition tool used to capture packet data flowing over a network. It can intercept and log traffic passing over a digital network or part of a network.