Description: Network policies in Kubernetes are a set of rules that control communication between pods and/or namespaces within a cluster. These policies allow defining what network traffic is allowed or denied, providing an essential level of control and security in microservices environments. By implementing network policies, administrators can segment traffic, limiting communication between different applications or components, which is crucial for maintaining data integrity and confidentiality. Policies can be as specific as needed, allowing configuration of rules based on labels, IP addresses, ports, and protocols. This not only helps prevent unauthorized access but also facilitates the implementation of a Zero Trust security approach, where it is assumed that threats may be present both inside and outside the network. In a world where applications are deployed in cloud environments and communicate through complex networks, network policies in Kubernetes have become fundamental to ensuring a robust and adaptable security posture, aligning with best practices in cloud security posture management and protection against DDoS attacks.
