DNS-over-HTTPS in Mozilla Firefox

Configure for secure browsing experience.

Preferences Menu

1. In the menu, navigate to Tools > Preferences > General > Settings > Network Settings.

2. Select Enable DNS over HTTPS.

3. To set DNS resolver, choose one of the following options:

   (Default) Set Cloudfare.

   Set a custom DNS resolver.

Configuration Panel

1. Type about:config in the URL bar.

2. Search for network.ttr.mode and set one of the following values:

   2:Turns on DoH and keeps the regular DNS only as a backup.

   3: Turns on DoH with no regular DNS support.

3. Search for network.ttr.uri to set the domain name of the DNS resolver.

   • The default Cloudfare URI is https://mozilla.cloudflare-dns.com/dns-query​

4. (Optional). Search for network.ttr.bootstrapAddress and set up one of the IP addresses.

   Cloudfare: 1.1.1.1

   Google: 8.8.8.8