FortiADC periodically connects to FDN services for its FortiGuard service license verification and signature database/engine updates.
When FortiADC is deployed behind a firewall or security system, the connection to FDN services may be blocked, preventing FortiADC from validating its license and components.
FortiADC requires at least DNS and HTTPS connection to the below domains:
Perform the below actions once FDN domains are allowed in firewall policy or security devices.
1) Go to System > FortiGuard.
2) Under FortiGuard Services, select Update Fortiguard Service Definitions
# execute update-now
Steps to verify:
1) Go to System -> FortiGuard.
2) Review Status information.
# get system status
More information in FortiADC documentation: