Network Segmentation

Dividing a network into isolated segments to improve security and limit attack spread.

Understanding Network Segmentation

Network Segmentation is a cybersecurity strategy that divides a network into smaller, isolated sections to improve security, performance, and access control. By restricting unauthorized movement within the network, segmentation minimizes the risk of lateral attacks, protects sensitive data, and enhances network efficiency.

Types of Network Segmentation

Physical Segmentation

Uses separate physical infrastructure (routers, switches) to create isolated networks.
Provides strong security but increases hardware costs.

Logical Segmentation (VLANs)

Uses Virtual Local Area Networks (VLANs) to separate network traffic without additional hardware.
Cost-effective and flexible for dynamic environments.

Micro-Segmentation

Divides networks into small, controlled zones using software-defined networking (SDN).
Prevents lateral movement of threats within the network.

Application Layer Segmentation

Controls access based on applications, services, and protocols rather than IP addresses.
Useful in cloud and hybrid environments.

Conclusion

Network Segmentation is a crucial security strategy that minimizes the risk of cyberattacks, improves performance, and ensures compliance with regulatory requirements. By implementing logical or physical barriers, organizations can effectively contain threats, control access, and protect sensitive data from unauthorized users. As networks become more complex, automated and AI-driven segmentation will play a key role in enhancing cybersecurity defenses.