Bandwidth monitor

Bandwidth monitor module allows you to analyze real-time network traffic using ntopng under the hood. ntopng is a powerful tool that evaluates the bandwidth used by individual hosts and identifies the most commonly used network protocols.

Dashboard

Dashboard page provides an overview on network usage displaying traffic information on some graphical widgets.

Status

Status section informs you whether bandwidth monitor is currently enabled and provides Open bandwidth monitor app button to access ntopng web interface.

Top local hosts

This table shows the list of hosts belonging to local networks that are currently generating most throughput, either downloading or uploading. This widget can help identify any hosts that are using a lot of bandwidth.

Top remote hosts

This table shows the list of remote hosts that are currently generating most throughput, either downloading or uploading.

Traffic by interface

This chart plots the throughput generated by monitored interfaces during the last 5 minutes.

Traffic by protocol

This chart plots the traffic divided by protocol during the last 5 minutes. ntopng tries to recognize various layer 7 protocols such as HTTP, TLS, DNS, SIP, Facebook, Spotify, Zoom, etc.

Settings

In Settings page you can manage Bandwidth monitor configuration through the following controls:

  • Enable bandwidth monitor: if enabled, all traffic passing through selected network interfaces will be analyzed. Depending on the capabilities of your server, it may cause a slowdown of the network and an increase in system load.
  • Interfaces: the network interfaces ntopng will listen to.
  • Web interface port: the TCP port where ntopng web interface should be available. By default TCP port is 3000 and can be accessed from green zone.
  • Enable authentication: if enabled, ntopng web interface will require login credentials. Username is admin and default password is admin.

When Bandwidth monitor is enabled, ntopng web interface is available at: http://<SERVER_NAME>:<WEB_INTERFACE_PORT>. A link to ntopng web interface is provided in Dashboard and Settings pages.

Logs

In Logs page you can examine systemd journal of ntopng unit.