Using network usage monitoring tools in linux: IPTraf, iftop, nethog

Whereas the first two show usage per port/ip, nethog does so per running user process.

In this article, we will explain a few tools that will allow you to check network usage per process in your Linux system. These tools include IPTraf, Iftop and Nethog. With the help of these tools, you can identify which process or port number is draining much of the network bandwidth.