Network policies govern the rules and regulations that define how devices and users access and utilize a computer network. These policies typically encompass guidelines for network security, resource allocation, user access permissions, traffic management, and acceptable use. They are established to ensure efficient network operation, protect against unauthorized access or malicious activities, and maintain compliance with organizational or regulatory requirements. Network policies are enforced through network devices such as routers, switches, firewalls, and through software configurations that control access and traffic flow within the network.
A Network Policy Server (NPS) is a role service in Windows Server that functions as a RADIUS (Remote Authentication Dial-In User Service) server and Network Access Policy Server. Its primary role is to authenticate and authorize remote users and devices attempting to connect to the network infrastructure. NPS works by evaluating connection requests based on configured network policies and either granting or denying access accordingly. It supports a range of authentication methods, including EAP (Extensible Authentication Protocol), and integrates with Active Directory to enforce network access policies across Windows-based networks.
Kubernetes network policies define how groups of pods are allowed to communicate with each other and other network endpoints. They operate at the network layer, specifying rules that control traffic flow based on labels assigned to pods. Kubernetes network policies use labels and selectors to apply rules to specific groups of pods, allowing administrators to define which pods can communicate with each other and on which ports. By default, Kubernetes clusters enforce a “default-deny” policy, meaning that no network traffic is allowed between pods unless explicitly permitted by a network policy. This approach enhances security and isolation within Kubernetes environments, ensuring that communication between pods follows predefined rules.
Computer network policies refer to the set of rules and guidelines that govern the use and management of computer networks within an organization. These policies define how employees or users can access and utilize network resources, including internet access, file sharing, email usage, and application access. Computer network policies often cover aspects such as security protocols, data protection measures, acceptable use policies (AUP), user authentication requirements, and compliance with regulatory standards or industry best practices. They are designed to protect network integrity, ensure efficient network performance, mitigate security risks, and promote responsible use of network resources by employees or users.