ntop is a tool that shows the network usage, similar to top. ntop has optional web interface, supports many protocols, has log capability. ntop web site
You can download it from the following link: https://packetstormsecurity.com/files/download/12787/ntop-1.0.src.tar.gz
Source: https://packetstormsecurity.com/files/12787/ntop-1.0.src.tar.gz.html