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The feature Block Referrer is now available! This allows the blacklisting of domains that are hotlinking content. Previously, only referrer whitelisting was available, which required all necessary domains related to the Zone to be added. This new feature can be enabled in just a few clicks and can result in significant costs savings if the content is hotlinked on other websites. An unauthorized request will result in an HTTP 403 error and the asset will not be delivered.
Block Referrer explainedBlocking referrers ensures that content is only loaded from authorized domains. Any unauthorized request will result in an HTTP 403 error. Allow Empty Referrer can still be used in the same way as before. Wildcard domains are supported too (e.g. *.example.com). If the feature Block Referrer is enabled, Zone Referrers will be blacklisted and if disabled, Zone Referrers will be whitelisted.
Blacklisting has several advantages over whitelisting: