Is it possible to monitor traffic in the local network of all stations?

Question

Computer networks

I want to do this: there are > 20 system workers in the building, put them all on the Internet through the gateway on which the ubuntu server is installed, all stations receive a dynamic ip, I have the poppy addresses of all stations and I want to have statistics on them who and how much eats the Internet. The machines are different everywhere (win7, XP, mac, ubuntu) without making any settings on these machines, you want to know who eats the Internet, and so that people are not distracted by any logins and passwords. Can you tell me if this can be done? Maybe something to read useful, what?

Answer 1

A simple solution: assign your IP to each poppy in dhcp, and collect IP statistics via mrtg:
nano -w /etc/dhcp3/dhcpd.conf
host comp1 { hardware ethernet 00:11:22:33:44:55; fixed-address 192.168.1.2 }
host comp2 { hardware ethernet 66:77:88:99:aa:bb; fixed-address 192.168.1.3 }
Etc. for all machines on the network, substitute the necessary poppies and addresses.

Answer 2

Vskidku first request in Google: forum.ubuntu.ru/index.php?topic=142067.0

Answer 3

Binding dhcp by MAC address and any netflow analyzer

Answer 4

MRTG?
www.opennet.ru/base/sys/mrtg_install.txt.html

Answer 5

Why ubuntu? There are special Linux builds like Zeroshell for such a thing .

Answer 6

On the other hand, why does a topikstarter need infa how many people use the Internet?
If there is a question about limiting the bandwidth for a specific ip, then you need to limit it, and not look.