Grafana on-premise publish to internet

Hello everyone,

I have Grafana 8.5.4 on a local server (Linux Red Hat 7.9) of my company, and due to the need of a certain segment of internal clients, it has been necessary to expose it to the Internet. For which use the Azure Active Directory Application Proxy Connector service.

I have achieved the integration/publication, through the external URL I can reach my Grafana on-premise (attached image), however I cannot view the data of the indicators/dashboards – I only get an “Origin not allowed” message.

I have activated the debug mode to see if anything about the issue is recorded in the log, however, there are no error messages or any text to help me figure out the problem

I hope you can help me to solve this problem.