Feature Overview
Based on the referer mechanism supported by the HTTP protocol, the source of a request can be identified through the referer field in the HTTP header. You can configure a referer blocklist or allowlist to identify and authenticate the sources of video requests.
Blocklist and allowlist modes are supported. When a video playback request reaches a CDN node, the node will authenticate the request source according to the configured referrer blocklist or allowlist. If a request meets the rule, CDN will return video data; otherwise, it will return a 403 response code and reject the playback request.
Precautions
This feature is optional and not enabled by default.
After enabling this feature, select and configure the blocklist or allowlist. The two modes are mutually exclusive, and only one is supported at the same time.
1–10 domain names can be entered in the blocklist or allowlist (one entry per line).
Do not put a protocol name (http:// or https://) before a domain name. Domain name matching is based on the prefix (for example, if you enter abc.com, then both abc.com/123 and abc.com.cn will be matched), and wildcard (e.g., *.abc.com) is supported.