Hi, I recently got a wireless broadband service installed and my data allowance is small (and expensive too!). I noticed that something on my network is using about 3Mb/hour and I need to find that and switch it off. I have a Debian box and a Windows XP box on the network connected like this: SIU---router~~wireless link~~access point---switch--PCs where SIU is the wireless service interface unit, equivalent to a DSL modem. I am assuming that the traffic I need to monitor is coming from one of my PCs and not the router so I want to install a traffic monitoring program on the Debian box. There seem to be lots of them available so can anyone suggest one that would be suitable for this application? Ideally it would have minimal configuration requirements. TIA Glenn BTW The router is a Linksys WRT54Gv5 and I tried the Linux based DD-WRT firmware which has many more features than the native firmware but the router's wireless interface wouldn't work properly with it. -- Glenn Ramsey <glenn(a)componic.co.nz> 07 8627077 http://www.componic.co.nz