Warning
Modifications to these settings can have a significant impact on the core filtering functionality.

| Allow list type | Description |
|---|---|
| DNS allow list | Domains entered in this list can be used to entirely bypass Securly DNS, meaning that they will not be redirected to Securly servers for authentication or filtering. |
| Referer/Origin allow list | Domains entered in this list will have embedded content permitted based on the Referer or Origin HTTP headers. This is typically used when embedded content is restricted by a Filter policy. |
| User-Agent allow list | This list allows embedded content to be permitted based on the User-Agent HTTP header. This is typically used when embedded content is restricted by a Filter policy or when applications (particularly on iOS) that generate web traffic need to bypass Filter to function properly. |
| Referer/Origin allowed destinations | This list is used in combination with the Referer/Origin allow list or User-Agent allow list to restrict the domains that can be embedded. This restricts embedding to youtube.com ad/or Vimeo.com so that embedded social media feeds are not accessible. |