The Web Services Container utilizes Denodo’s embedded Apache Tomcat Server. So, if you want to use HTTPS, you only have to modify the configuration of the Tomcat Server (i.e. you don’t need to enable SSL for all connections). Have you seen the section called ‘Enabling HTTPS in the Embedded Apache Tomcat’ in the Installation Guide? I was able to configure my web services to use HTTPS by following the instructions in that section.
Once you’ve got everything set up, you’ll be able to access your webservices via HTTPS using the port you configured in your tomcat.properties file. This is 9443 by default. Also, I found a Knowledge Base article in the Security section called ‘Disabling the HTTP port of the embedded web container.’ You might want to check that out if you want your web services to be HTTPS only.
Hope that helps!