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Is there a reason your CDN couldn't talk to your backend via SSL too?
Is there a reason your CDN couldn't talk to your backend via SSL too?
No reason, but does that help? I suppose it might, if the CDN used a keepalive connection and had less hops to go over.
If your visitors are using HTTPS to talk to you CDN, then you almost certainly should be using HTTPS from CDN to origin.