You could use N-Map to see what packet are flying around your network or a simple trial and error turn off all bar one device and if it's not the offender turn on a second rince and repeat -------- Original message -------- From: cory seligman <coryms.luv@gmail.com> Date: To: luv-main <luv-main@luv.asn.au> Subject: data usage metering by IP on openwrt. Does anyone know of a simple way of showing which of my machines on my home network is hogging all my data? I recently discovered that something on my network is using ~30M per hour all day and night and I'd like to find out what it is. I guess I could go around and turn each thing off and check my ISP's usage meter over a few hours, but there must be a better way of doing it. I have a WRT54GL running: Firmware OpenWrt Kamikaze - With X-Wrt Extensions 8.09 Kernel Linux 2.4.35.4 #15 Fri Jan 22 11:36:55 CST 2010 MAC 00:18:39:ED:A2:73 Device Linksys WRT54G/GS/GL Board Broadcom BCM5352 chip rev 0 Username root Web mgt. console Webif² Version r4838 I'm very lazy, so an installable package that can do this over a web interface would be ideal, but not necessary. anyone?