DNS server too high, even not using it

RouterOS General
1

Hey y’all, I have and DNS server on my network, on IP 192.168.0.2, and I configured the DHP server on my mikrotik (192.168.0.1) to use my DNS server:

and configured the DNS on my mikrotik router like this:

But looking the process, DNS server is taking more than 16% to 30% of the CPU..

why is that? I’m not using DNS server on the router, or supposed to not be used.. what I did wrong here?

Thanks!
Regards!

2

When you are not using it: remove the “allow remote requests” checkmark.
What you are doing wrong: running router without appropriate firewall.

3

I uncheckd the allow remote requests and works… according to firewall, I have some rules for example blocking DNS from WAN, but nothing to deal with DNS on my LAN.

4

Simplify.

Block ALL from WAN, both input and forward.
Then only allow what you know for certain is needed.