Apache Tomcat is the web application server that runs Jamf Pro.
Jamf tests each version of Jamf Pro with the corresponding version of Tomcat listed in the Apache Tomcat Versions Installed by the Jamf Pro Installer article. You are highly encouraged to install the version of Tomcat associated with the version of Jamf Pro you are installing.
The following instructions explain how to manually configure Tomcat to use a self-signed SSL certificate on port 8443.