A small company Is publishing a new web application to receive customer feedback related to Its products. The web server will only host a form to receive the customer feedback and store It In a local database. The web server is placed In a DMZ network, and the web service and filesystem have been hardened. However, the cybersecurity analyst discovers data from the database can be mined from over the Internet. Which of the following should the cybersecurity analyst recommend be done to provide temporary mitigation from unauthorized access to the database?