What is Network Segmentation?
Network segmentation is a strategy used in network security to divide a computer network into multiple segments or subnetworks. This approach helps enhance the overall security posture of an organization by isolating sensitive data and systems, thereby limiting unauthorized access. By implementing segmentation, organizations can effectively control traffic between different parts of the network, reducing the risk of cyber attacks such as data breaches and lateral movement of threats.
There are various techniques for segmenting a network, including using Virtual Local Area Networks (VLANs), firewalls, and subnets. Each method serves to create boundaries around critical resources, enabling companies to apply specific security policies and measures tailored to the importance of each segment. For example, a finance department’s network may have more stringent access controls compared to other departments due to the sensitive nature of financial data.
Moreover, network segmentation aids in improved performance and management of the network. By reducing broadcast domains and limiting the impact of issues in one segment on others, organizations can ensure better efficiency and reliability. Overall, effective network segmentation is a key component of a comprehensive cybersecurity strategy, significantly mitigating risks and bolstering an organization’s defenses against cyber threats.