How to Enable DoH in Firefox
DoH (IETF RFC8484) allows browsers to send DNS requests as normal-looking HTTPS traffic to special DoH-compatible DNS servers (called DoH resolvers). These are the instructions how to enable DoH for Firefox browsers.
How to configure DoH through the Firefox Browser UI
- Click the menu button Menu and select Preferences.
- In the General panel, scroll down to Network Settings and click the Settings button.
- In the dialog box that opens, scroll down to Enable DNS over HTTPS.On: Select the Enable DNS over HTTPS checkbox. Select a provider or set up a custom provider. Off: Deselect the Enable DNS over HTTPS checkbox.
- Click the Use Provider drop-down under Enable DNS over HTTPS to select a provider.
- Change DNS Provider
- Add your Securd DOH URL (located in the Securd Portal at Virtual Sites).
- Click OK to save your changes and close the window.
How to configure DoH with about:config (Advanced)
about:config
network.trr.boostrapAddress=Securd Primary DNS Address (located in the Securd Portal)
network.trr.custom_uri=Securd DOH URL (located in the Securd Portal at Virtual Sites)
network.trr.mode=3
network.trr.uri=Securd DOH URL (located in the Securd Portal at Virtual Sites)
network.trr.mode (https://wiki.mozilla.org/Trusted_Recursive_Resolver)
2: Use TRR first, and only if the name resolve fails use the native resolver as a fallback.
3: Only use TRR, never use the native resolver.
Other Resources
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