receiving unnecessary traffic

Hello team,

I have a mikrotik router where i have connected one Microwave PTP antenna which brings internet, and no users connected on my router. However i am receiving almost 30Mbps up/down traffic. Can someone advise me what is happening? Thank you for your help

Badly set firewall. Check what interface is treated as wan and update the settings of input and forward rules. Most probably your dns service is accessible from the Internet…
It is described manytimes here all around.

Can you post your configuration please?

http://www.mtin.net/blog/protecting-your-mikrotik-from-dns-amplification/