Authorize by Secure DNS
What is Authorize by Secure DNS
Authorize by Secure DNS lets Control D authorize a network after a successful Secure DNS query from this Endpoint. When enabled, newly seen source IPs from Secure DNS usage can be stored with the Endpoint as Authorized IPs.
How to Use
Edit an Endpoint and toggle Authorize by Secure DNS ON. When the Endpoint is used with a Secure DNS protocol, Control D can authorize the source network for that Endpoint.

If you have Legacy DNS enabled, stored Authorized IPs can use the Endpoint's Legacy DNS resolvers. Disabling this setting stops Control D from learning new IPs from Secure DNS usage.
Require Authorized IPsIf Require Authorized IPs is already enabled, unknown IPs are refused before they can be learned. Add the IP manually or use another bootstrap method before requiring Authorized IPs for a new network.