I'll show you two tools to check the network promptly to help us to make a measurement bandwidth consumption that is having to evaluate potential bottlenecks in the network.

OPTION 1: iftop

It's an interesting alternative for terminal, as always tested on Ubuntu Linux.

To install it enough just to make the classic:

aptitude install iftop

The command has a few parameters to play with making a iftop man, will have a long list, but I'll show you some examples:

To see your network interface you can write:

ifconfig -a

To see what passes for the network interface wlan0 you need write:

iftop -i wlan0

Scan IP range and interface wlan0:

iftop -F 192.168.1.0/255.255.255.0 -i wlan0

If you press the h key when we are seeing the details gives us many more options.

OPTION 2: Iptraf

It's another alternative with a little more graphic and a small menu that meets their homework very well.

Installation is very simple:

aptitude install iptraf

To run the program:

iptraf