What is the function of dynamic DNS in FortiGate?

The function of dynamic DNS in FortiGate is to automatically update DNS records with IP address changes. This feature is particularly useful for networks that utilize dynamic IP addresses, which can change frequently, making it challenging to maintain accurate DNS records. Dynamic DNS ensures that as the IP address of a device changes, the corresponding DNS record is updated in real-time, allowing for consistent access to services and resources hosted on that device.

By leveraging dynamic DNS, network administrators can ensure that clients can reliably connect to servers, even if their IP addresses change, without needing constant manual intervention to update DNS entries. This is critical for services such as remote access, web hosting, and other scenarios where reliable domain resolution is necessary.