What is the concept of segmentation in network security?

Segmentation in network security refers to the practice of dividing a network into distinct zones or segments. This approach enhances security and manageability by isolating different parts of the network. Each segment can be tailored with specific security policies and controls suited to the type of data and applications being handled in that zone.

For instance, sensitive data can be placed in a highly controlled segment that allows access only to authorized users, while less sensitive areas can have more open access policies. This not only limits potential exposure in the event of a security breach but also aids in compliance with various regulatory requirements.

By segmenting a network, organizations can improve their ability to monitor traffic, implement targeted security measures, and minimize the attack surface, leading to a more robust overall security posture. The distinct zones make it easier to manage security policies and enforce rules, thereby contributing significantly to network efficiency and protection.