Firefox begins rollout of the encrypted DNS Over HTTPS (DoH) feature. By this time, DNS over HTTPS (DoH) is enabled by default for US-based users only, but that will change in the future.
DNS-over-HTTPS is a relatively young web protocol, implement about two years ago. It is intended to increase user privacy and security by preventing eavesdropping and manipulation of DNS data by man-in-the-middle attacks by using the HTTPS protocol to encrypt the data between the DoH client and the DoH-based DNS resolver.
Firefox supports DNS over HTTPS (DoH) out of the box. Today's announcement says of DoH:
We're enabling DoH by default only in the US. If you're outside of the US and would like to enable DoH, you're welcome to do so by going to Settings, then General, then scroll down to Networking Settings and click the Settings button on the right. Here you can enable DNS over HTTPS by clicking, and a checkbox will appear. By default, this change will send your encrypted DNS requests to Cloudflare.
Check out this manual:
Enable DNS over HTTPS in Firefox
Firefox has Cloudflare and NextDNS services preinstalled out of the box. You can select one in settings, or specify a custom service of your choice.
Mozilla said that it’s looking to expand the list of trusted resolvers in the future.
The feature will be enabled in the US over the coming weeks to confirm no major issues are discovered as this new protocol is enabled for Firefox’s US-based users.
Similarly, users of other browsers can also enable this functionality.
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