Allow list-Only refers to the concept of blocking all possible domains by default, except those specified by a Allow list. This is also referred to as a “default deny” policy, rather than a “default allow” policy.
The Dashboard doesn’t have a single switch to enable Allow list-Only mode, but this can be achieved by blocking all possible categories in the dashboard.
Setting up a Allow list-Only Filtering Policy doesn't mean adding a single domain will result in a fully functional website. In almost all cases, websites use multiple domains and services to load content associated with the website.
DNSFilter Support will not assist in researching all domains required to load a specific website or service if the Policy is set up to be Allow list-Only. However, we have written a helpful article that will help you to research Pages Not Loading
Setting Up and Allow-only Policy
- Block all Content Categories
- Block all Threat Categories
- Block Uncategorized/Unknown Domains, and Remaining Categories
- Add desired domains to the Allow list