goto url about:config filter with: network.trr.* and set the following values: network.trr.mode value 3 network.trr.bootstrapAddress and set value as one ip from this page ( currently 220.127.116.11 ) now open a new tab to this page used to verify if everything is working. You should have all green except sni . To make all green you should switch tab and go back to config page change filter with: network.security.* and set: network.security.esni.enabled value true go back to previous tab and refresh. You should have all green.