What are the default primary and secondary DNS server addresses on a FortiAnalyzer?

The default primary and secondary DNS server addresses on a FortiAnalyzer are set to Fortiguard DNS. This is because Fortiguard is Fortinet's own service that provides content filtering, web reputation services, and threat intelligence. Configuring the FortiAnalyzer to use Fortiguard DNS ensures that it can leverage these additional security services effectively, particularly in environments heavily reliant on Fortinet products.

Choosing Fortiguard DNS as the default allows FortiAnalyzer to maintain a close integration with other Fortinet solutions, ensuring optimal performance, security updates, and access to Fortinet’s proprietary threat intelligence in real time. The other options, while popular DNS services, do not offer the specialized features that Fortiguard DNS provides in relation to Fortinet devices, which makes them less relevant in this context.