What is the role of virtual local area networks (VLANs) in network security?

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What is the role of virtual local area networks (VLANs) in network security?

The role of virtual local area networks (VLANs) in network security is to enhance security by logically segmenting a physical network into multiple virtual networks. This segmentation helps to isolate and control network traffic, preventing unauthorized access and reducing the risk of attacks or breaches. VLANs allow for the implementation of access control policies, ensuring that only authorized users or devices can communicate within a specific VLAN. Additionally, VLANs can be used to separate sensitive or critical data from other network traffic, providing an added layer of protection.