A flat network is a hacker's playground. If an attacker breaches one machine, they can easily move laterally to reach your sensitive databases.
What is Network Segmentation?
Segmentation is the practice of splitting a network into smaller sub-networks (segments) to improve security and performance.
1. Micro-Segmentation
Go beyond VLANs. Use software-defined networking (SDN) to create granular policies for every workload, regardless of where it sits in the data center or cloud.
2. Identify High-Value Assets
Isolate your "crown jewels"—such as customer PII or payment systems—behind dedicated segments with extremely restrictive access controls.
3. Implement the Principle of Least Privilege
Segments should only communicate with each other if there is a verified business need. Block all other traffic by default.