The Ntop network traffic probe is built into the Igaware Linux Small Business Server.
To enable NTOP on your Igaware Linux Small Business Server, in the admin interface go to System=>Tools=>Ntop Server
Enable the server and set an admin user name and password, Click update and commit changes.
Once enabled you access Ntop through a web browser by visiting the following URL: http://[server]:3000 (replace [server] with the Igaware server’s LAN IP address.
Enjoy!