Segmentation
Dividing a network into smaller zones to limit lateral movement and blast radius.
Segmentation divides a network into zones so a breach in one can’t move laterally into others, shrinking the blast radius. VLANs, firewalls, and host-based policies layer together; micro-segmentation pushes the idea to per-workload rules in cloud and data-center environments and is a pillar of zero trust.
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