How can FortiGate segregate traffic between different departments in a company?

FortiGate can effectively segregate traffic between different departments in a company by implementing VLANs (Virtual Local Area Networks) or VDOMs (Virtual Domains). VLANs allow the creation of distinct broadcast domains within a single physical network, enabling traffic segregation at the data link layer. This means that devices in different departments can communicate over the same physical infrastructure while being logically separated, enhancing security and performance.

Meanwhile, VDOMs provide a way to create multiple virtual instances of the FortiGate device, allowing each department to have its own administrative domain with distinct policies and configurations. This separation enhances management efficiency and security since each department can operate independently without impacting others.

The use of firewalls alone may not adequately address traffic segregation, as they primarily control traffic flow and not necessarily segment networks. While deploying multiple internet connections could provide redundancy or load balancing, it does not inherently segregate traffic between departments. Similarly, using a single network segment would actually consolidate traffic rather than segregate it, leading to increased risk and potential bottlenecks.