Is there a way to create a whitelist instead of a blacklist? In some VMs / computers, I'd like to whitelist Internet domains instead of blacklisting, for secur

Is there a way to create a whitelist instead of a blacklist? In some VMs / computers, I'd like to whitelist Internet domains instead of blacklisting, for security reasons. Edit: Seems PiHole supports whitelisting: "Manage White And Black Lists" https://pi-hole.net/ https://pi-hole.net/