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How to enable DNS over HTTPS (DoH) in Firefox

DNS over HTTPS (DoH) is a way to encrypt DNS queries and responses between a user's device and the resolving DNS server. For more on this see New in Simple DNS Plus v. 9.0.

To enable this in Firefox, do the following:

  • Click the "hamburger" button (3 horizontal lines) in the top right corner of Firefox.
  • Select "Settings...".
  • Click "General" in the right side panel.
  • Scroll down to "Network Settings" (at the bottom) and click the "Settings" button.
  • In the "Network Settings" dialog, scroll to the bottom and check "Enable DNS over HTTPS".
  • Here you can specify your DNS provider / enter a DoH query URL:

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