To connect to Denodo Platform which has SSL enabled from Tableau, I would follow the steps as mentioned in the below documentation:
* [“Enabling SSL/TLS for External Clients”](https://community.denodo.com/docs/html/browse/latest/platform/installation/postinstallation_tasks/enable_ssl_connections_in_the_denodo_platform_servers/enabling_ssl_for_external_clients#enabling-ssl-tls-for-external-clients) in the the Denodo Platform Installation Guide. *Note*: If connection is through ODBC, I would make sure that SSL is enabled in the DSN that will be used to connect to Virtual DataPort.
* [“How to connect to Denodo from Tableau Desktop”](https://community.denodo.com/kb/view/document/How%20to%20connect%20to%20Denodo%20from%20Tableau%20Desktop?category=Northbound+Connections) Knowledge Base article.
Additionally, if you still need help and if you are a valid Support User, you may open a Support Case at the Denodo Support Site and the Support Team will help you.
Hope this helps!