Yeah, it is possible to create a DNS entry where you can access the Data catalog. I would follow one of the below-mentioned steps:
* In the control center, under the ‘*Configure*’ tab, the default (listening) HTTP port number can be changed to 80 so that the DNS would by default point to the server’s HTTP port i.e. 80.
* By setting up the server for port 80(DNS) to be a reverse proxy for the data-catalog server. When it receives a request for the data-catalog, it would relay the request to the server running on port 9090, and relay the server's response back to the client.
You may also refer to [Embedded Web Container](https://community.denodo.com/docs/html/browse/7.0/platform/installation/using_the_graphical_installation_wizard/embedded_web_container/embedded_web_container) section of the Denodo Platform Installation Guide and [Configuration of web container port numbers](https://community.denodo.com/kb/view/document/Configuration%20of%20web%20container%20port%20numbers?category=Operation) document for more information.
Hope this helps!