Blocking DNS queries With IP Range.

amk · Oct 5, 2016, 3:26 PM

Hello,

Need some help I need to block dns queries using OpenDns.

I have managed to setup OpenDns and test and it works.

What I want is to block a IP range from 192.168.0.20 to 192.168.0.254. Tried Multiple formats and failed.

Regards,

Amk.

johnpoz · Oct 5, 2016, 4:01 PM

That is not how you would block it.

Create an alias to include that subset of your network.

KOM · Oct 5, 2016, 4:04 PM

That's not how it works. When Destination is a network, you must supply the network address and CIDR mask eg. 192.168.0.0/24. You can't put a range there. Using 192.168.0.0/27 gives you 192.168.0.1 - 192.168.0.30 usable so use that instead and modify your network allocation, or you could also do 192.168.0.0/28 which gives you 192.168.0.1 - 192.168.0.14 usable. Check the Invert Match box and it should work for you.