What is the default DNS requester for FortiOS?

The default DNS requester for FortiOS is the FortiGuard server via TLS. This is important for ensuring secure and reliable DNS resolution as it utilizes Fortinet's own infrastructure to provide up-to-date information and filtering capabilities. The FortiGuard servers are specifically designed to deliver DNS services that can include filters for malicious domains, enhancing the overall security posture of the network.

Using FortiGuard servers also allows FortiOS devices to benefit from Fortinet's threat intelligence, which can lead to improved responses to various threats, such as phishing or other types of malicious activities. This built-in integration with FortiGuard is particularly beneficial as it reduces the need for manual configurations and leverages the proprietary services Fortinet offers.

In contrast, other alternatives may lack the same level of security, reliability, and integration. For example, while options like OpenDNS or third-party DNS services might offer some advantages, they do not provide the specific functionalities that FortiGuard servers do in the FortiOS environment. Additionally, relying on Fortinet's internal server emphasizes the company's platform's secure and efficient design aimed at providing a streamlined experience for network administrators.