I have a WAG200G that is sending out about 500k+ of traffic without any apparant source. (I'm an IT Manager, so have a couple of clues) I've shut down every device attached tot he network, turned off Wifi and blocked outgoing traffic from my pc running PRTG SNMP monitoring, but it doesn't stop.
The LAN and Wifi ports don't have any matching traffic as you would expect. This has been going on for about 3 weeks. I noticed it when I went through last months data faster than usual and I've already used 80Gb after 10 days in to this month!
I've reset the router, and it's running the latest firmware (updated afew months ago)
Below is what PRTG shows me on the interfaces (Port 1 is loopback, the other ports are disconnected)
Hope someone can help