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Network segmentation divides a larger network into smaller, isolated zones, each with its own access controls.
The Security Benefit
If one segment is compromised, segmentation prevents an attacker from automatically moving freely into other parts of the network — containing the damage rather than allowing it to spread unchecked.
A Practical Example
Keeping customer-facing web servers on a separate segment from internal administrative systems means a web application vulnerability doesn't automatically expose sensitive internal tools.
