(A value of 0 means disabled by default, and might be overridden by future updates - a value of 5 is disabled by choice and will not be overridden.) If you trust DNS servers you have configured yourself more than Cloudflare's, you can disable TRR in about:config by setting (integer, create it if it does not exist) to 5.While this is significantly more secure (as "classic" DNS requests are sent in plain text over the network, and everyone along the way can snoop on these), this also makes all your DNS requests readable by Cloudflare, providing TRR servers. It circumvents DNS servers configured in your system, instead sending all DNS requests over HTTPS to Cloudflare servers. Disable/enforce 'Trusted Recursive Resolver'įirefox 60 introduced a feature called Trusted Recursive Resolver (TRR). Warning: The "Do Not Track" header (DNT) may actually be used to fingerprint your browser, since most users leave the option disabled. The value for the key is your browser's user agent. You can override Firefox's user agent with the preference in about:config. Or, set a script to launch the above (for example, at /usr/local/bin/firefox). To set Firefox's time zone to UTC launch it as: The time zone of your system can be used in browser fingerprinting. If you are already running such an ad blocker with the correct lists, tracking protection might be redundant. Note that this is not a replacement for ad blocking extensions such as uBlock Origin and it may or may not work with Firefox forks. trueĪpart from privacy benefits, enabling tracking protection may also reduce load time by 44%.It can be enabled by setting about:config: See the tracking bug that lists many of these features.įirefox gained an option for tracking protection. But it does automatically enable many of the features listed below (such as changing your reported timezone and user agent), as well as protection against other, lesser-known fingerprinting techniques.
It exists mostly to make life easier for the Tor Browser developers.
favicons may not load, pages will feel sluggish). There is no user-facing documentation about this flag, and Mozilla does not recommend users enable it, since it will break a few websites (e.g. Many of these anti-fingerprinting features are enabled by setting about:config: Mozilla has started an anti-fingerprinting project in Firefox, as part of a project to upstream features from Tor Browser. The following are privacy-focused tweaks to prevent browser fingerprinting and tracking.
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