Forbidden 403 Error when the reference (HTTP Header) is external i want a forwarding

[wmakend]

Hello, 

I have an asset that is secure in my DAM Folder. When I want to enter from a given URL in the browser, I get a reference to my page login (cq: cugLoginPage / loginm cq: cugEnabled true), which is quite normal. But when the link comes from an extern page, I receive 403 (Probably because of the referrer). How can I despite the referrer, and forwarding to my login page

Thanks you

W.

[mvance]

I'm not sure if there is a simple answer to this, I was checking some resources but can't see mention of the referrer causing issues

http://sling.apache.org/documentation/the-sling-engine/authentication.html
http://www.wemblog.com/2013/01/how-to-associate-cug-with-dam-asset-in.html

https://docs.adobe.com/docs/en/aem/6-0/administer/security/cug.htm

is there any info in the logs? What version are you running?