Block dns over https

anas4096 · October 21, 2025, 8:55am

Hello

I m using flint2 with ADguard, but recent firefox version use by default DNS from cloudflare, and nextdns, how can i block IPs of those DNS provider?

will.qiu · October 22, 2025, 1:57am

Hi

These IPs can be blocked via Luci - Network - Firewall - Traffic Rules.
Here's an example for Cloudflare DoH:

anas4096 · October 22, 2025, 8:24am

thanks it work fine,

i also block dns ||cloudflare-dns.com as firefox switch to cloudflare dns when ip is blocked.

Know1UNo · November 8, 2025, 4:55pm

I know this is resolved and it is good to know how to use your devices other features, but for others that click on this link in the future:

You can just turn off DoH in Firefox (as seen in your screenshot). And it says it will use your default resolver. Which will be your DNS router settings.

anas4096 · November 11, 2025, 3:16pm

The target was to filter all my home network not just my machine, finnaly i use banip with doh list