ntop running on a linux/unix box is great. Attach it to a monitor port and it will give you all kinds of useful info. I think you can boot off a knoppix cd and run it from there. ntop.org ________________________________ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of David Teague Sent: Friday, April 15, 2005 9:56 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] OT - Traffic Monitoring Guys, I am monitoring the traffic on my router with SNMP, I am seeing really high spiked in traffic from time to time coming from inside, Is there a snmp software out there that can help me find out which computers is causing the issue? David Teague Support Analyst TMTsoftware 919-493-4700