What does network segmentation achieve?

Network segmentation is a fundamental concept in cybersecurity and networking that involves dividing a larger network into smaller, distinct segments or subnetworks. This practice achieves several important objectives, particularly in enhancing security and managing network performance.

When used effectively, network segmentation allows for the logical grouping of network assets into compartmentalized areas. This compartmentalization helps to control traffic flow, limit access to sensitive data, and reduce the attack surface by isolating critical systems from less-secure ones. For instance, if one segment of the network is compromised, proper segmentation can help prevent the threat from spreading to other segments, thereby enhancing overall network security.

Additionally, network segmentation facilitates better monitoring and management of network traffic. It allows network administrators to apply specific security policies to different segments, ensuring that only authorized users and devices can access sensitive information or critical resources. This can help organizations comply with regulatory requirements and improve their overall security posture.

In summary, the essence of network segmentation lies in its ability to create compartmentalized areas within a network, which leads to improved security measures and more effective management of resources.