Recently when I look at the last-24hr traffic chart, I see on my home RT-N16 there is a constant traffic on eth0 about 30KB/s, even in the mid night. I want to know what cause the traffic. So to start what is the eth0? How I see what is going on on that interface?
Thanks for help.
My router is RT-N16 with:
Tomato Firmware v1.28.9054 MIPSR2-beta K26 USB vpn3.6