A Network Security Policy is a formal document that outlines the rules and procedures for protecting a computer network from unauthorized access, misuse, or damage. It defines the security measures that must be implemented, such as firewalls, encryption, and access controls, to safeguard sensitive data and maintain the integrity of the network. This policy serves as a guideline for employees and IT personnel, ensuring everyone understands their responsibilities in maintaining network security. Regular reviews and updates of the policy are essential to adapt to new threats and technologies, helping organizations like businesses and government agencies protect their information assets effectively.