[clug] Net traffic

[fred]

Hi, I have a network monitoring question that somebody may be able to  
answer. I am running debian
  and windows behind a smoothwall box with ADSL, with the various  
connections hooked into a switch. I would like to monitor, from the linux  
box, the traffic going to the windows machine. I have googled for an  
answer and tried programs like iptraf, but cannot get the programs to do  
what I need as I am not confident with the CLI. Smoothwall has a monitor,  
but it shows 24 hour cycles, not real time.
TIA
Fred