Text-based network monitoring tools...

I want share some projects that I found very useful when you require to monitor you network activity. Those projects are not so much sophisticated but very useful for figuring out how and who is consuming your network bandwidth.

• iptstate this program presents connections "observed" by iptables
• speedometer is a python script to show in real-time how much bandwidth is consumed by a network interface. It discriminates between download and upload bandwidth consumption. How to use it: 'speedometer -rx <network-interface> -tx <network-interface>'
  
• pktstat "displays a real-time list of active connections seen on a network interface, and how much bandwidth is being used". How to use it: 'pktstat -i <network-interface>'

<network-interface> could be wlan0, eth0, ppp0, and so on.

References

• Link - 1