When you first boot up the firewall or Panorama,
it automatically generates a default certificate that enables HTTPS
access to the web interface and XML API over the management (MGT)
interface and (on the firewall only) over any other interface that
supports HTTPS management traffic (for details, see
Use
Interface Management Profiles to Restrict Access). To improve
the security of inbound management traffic, replace the default
certificate with a new certificate issued specifically for your
organization.
You cannot view, modify, or delete the
default certificate.