12/19/2023 0 Comments Aws backbone networkYou may also compare the AZs in use on the Service Consumer and Service Provider to which you may find that they are both using us-east-1a, us-east-1b, and us-east-1c. Without it, when a Service Consumer attempts to connect to the VPC Endpoint Service, it will more than likely exit with an AZ mismatch error. The Available AZs in a given AWS region also plays a big role in Privatelink and this is most visible through PrivateLink’s requirement to have the provisioned NLB span all Availability Zones. It’s worth calling out that you can’t attach security groups to the NLB, so any additional network security to allow PrivateLink traffic will need to reside on the ALBs security group. In many cases, this is probably the Application Load Balancer for your service. The NLB then forwards on requests to a registered target.
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