Network Load Balancer (NLB) now supports security groups, enabling filtering of traffic to improve application security posture, enforce access control policies, and simplify operations.

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<p>The article discusses Network Load Balancers (NLB) now supporting security groups, which allows filtering of traffic accepted by the NLB. This enhances security and simplifies access control policies for applications.</p>
<p>Specifically, the article covers:</p>
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<li>NLB support for security groups enables configuring rules to accept traffic only from trusted IP addresses and enforce access control policies.</li>
<li>Security group inbound rules can be enforced even when the load balancer converts IPv6 traffic to IPv4 or when targets are in peered VPCs.</li>
<li>Security group referencing allows restricting access to resources, ensuring clients access them only through the load balancer.</li>
<li>For Kubernetes users, security groups on NLBs can be enabled using AWS Load Balancer Controller version 2.6.0 or later, enhancing node security and providing scaling improvements.</li>
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