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Network Security Group

Also known as:NSG

Network Security Group: Cloud-based rule set for controlling inbound and outbound network connections. ImplementationImplementationThe practical realization of a security design, requirement, or control in a system or process. should jointly consider architecture, permissions, hardening, monitoringMonitoringThe continuous observation of systems, identities, networks, and controls for relevant changes., dependencies, and operational recoveryRecoveryThe controlled restoration of systems, data, and business services after a disruption..

How it works and where it fits

Network Security Group is a preventive, detective, or corrective security control. Its effect depends on where it sits in the architecture, which data and decisions it processes, and how it might be bypassed. A control reduces a defined risk but rarely removes it completely, so it should be combined with additional layers of protection.

Practical security relevance

Before deployment, the objective, ownership, coverage, and expected behavior should be defined. Secure defaults, controlled exceptions, logging, and periodic effectiveness tests matter more than installation alone. Operational metrics should expose both blocked or detected activity and gaps, false alerts, and effects on legitimate business processes.

  • Cloud Security Posture ManagementCloud Security Posture ManagementDetects misconfigurations and compliance deviations in cloud environments.: Detects misconfigurations and compliance deviations in cloud environments.
  • Cloud-Native Application Protection PlatformCloud-Native Application Protection PlatformIntegrated platform for securing cloud applications across development and operations.: Integrated platform for securing cloud applications across development and operations.
  • FirewallFirewallControls network traffic based on defined rules and security policies.: Controls network traffic based on defined rules and security policies.
  • Shared Responsibility ModelShared Responsibility ModelDivision of security tasks between the cloud provider and the customer.: Division of security tasks between the cloud provider and the customer.

Related terms