What are the three distinct corporate network zones?

The distinction of the three corporate network zones is significant because it relates to how organizations structure their network security and resources. The answer identifies Corporate LAN, Shared Services, and CDE as distinct zones within a corporate network.

The Corporate LAN (Local Area Network) typically refers to the internal network environment where most detailed company operations and sensitive data reside. It is protected by various security measures and is intended for internal use only.

Shared Services refer to certain resources and services that are used by multiple departments within the organization, such as email services, file-sharing systems, or application servers that require strict access controls to ensure that only authorized users can access them, linking them to the internal network while also being accessed externally under secure protocols.

CDE, or Cardholder Data Environment, is specifically designed to protect payment card information and other personally identifiable information. This zone has stricter security regulations under PCI DSS, as it contains sensitive data that must be closely safeguarded from unauthorized access and breaches.

This understanding of network zones is crucial for effectively implementing security measures tailored to their risk profile and for ensuring compliance with regulations such as the PCI DSS, which governs the treatment of cardholder data.

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