IT notes

DoH Firefox

Open firefox and type: about:config Search for: network.trr.uri Probably you already have: If not add it or use something like: Then enable network.trr.mode by setting it to 2 Set network.trr.mode to 2 make DNS Over HTTPS the browser’s first choice but use regular DNS as a fallback (0 is “off by default”, 1 lets Firefox pick whichever is faster, 3 for TRR only mode, 5 to explicitly turn it off).