What is the main function of VDOMs in FortiGate?

The primary function of Virtual Domain (VDOM) technology in FortiGate is to partition a single FortiGate unit into multiple virtual devices. This capability allows organizations to create distinct environments within the same physical infrastructure, each operating independently. By using VDOMs, administrators can tailor security policies, routing configurations, and resources for different departments or clients, effectively enabling multi-tenancy.

This virtualization feature maximizes hardware utilization, as multiple administrative domains can run concurrently on the same FortiGate unit. Each VDOM can have its own sets of security profiles, firewall policies, and user authentication methods, providing flexibility and centralized management for diverse operational requirements. This segregation helps ensure that issues or misconfigurations in one VDOM do not affect the others, enhancing overall security and manageability.

The other options do not encapsulate the core functionality of VDOMs. For instance, while enhancing internet speed, managing physical network connections, and customizing user interfaces may be relevant in broader network management contexts, they do not represent the fundamental purpose or advantages brought by VDOMs in FortiGate technology.