
Network Load Balancers now support security groups, enabling fine-grained traffic control and improved security for containerized applications in Amazon EKS through the AWS Load Balancer Controller v2.6.0.


<div><p>This article announces that Network Load Balancers (NLB) now support security groups, enabling fine-grained traffic control for containerized applications on Amazon EKS.</p><ul><li>NLBs can now attach security groups to filter accepted and forwarded traffic</li><li>AWS Load Balancer Controller v2.6.0+ automatically creates and applies security groups to NLBs</li><li>Frontend security groups control traffic routed to the load balancer</li><li>Backend security groups manage traffic between NLBs and targets (instances or pods)</li><li>Reduces security group rule management at instance level, preventing quota limits</li><li>Kubernetes annotation allows specifying existing security groups for NLBs</li><li>Feature available in all AWS commercial regions at no additional cost</li></ul><p>This enhancement improves security posture for Kubernetes applications by centralizing access control at the load balancer level rather than instance level.</p></div>


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