• Ntop is a network monitoring utility. You can monitor local devices as well as devices with Netflow output (like a Cisco router). It's very easy to install too, open a terminal and type:

              sudo apt-get install ntop

• Now that it is installed, you have to do some basic setup. Once again, in the terminal, type:

                       sudo ntop
 
 read more »    

• Open terminal and type the following  

                                      sudo apt-get install netspeed
 read more »