What actions should the SysOps Administrator take to meet these requirements?
Create a VPC endpoint for the S3 bucket, and create an IAM policy that conditionally limits all S3 actions on the bucket to the VPC endpoint as the source.
Create a VPC endpoint for the S3 bucket, and create a S3 bucket policy that conditionally limits all S3 actions on the bucket to the VPC endpoint as the source.
Create a service-linked role for Amazon EC2 that allows the EC2 instances to interact directly with Amazon S3, and attach an IAM policy to the role that allows the EC2 instances full access to the S3 bucket.
Create a NAT gateway in the VPC, and modify the VPC route table to route all traffic destined for Amazon S3 through the NAT gateway.
Explanations:
Creating a VPC endpoint for the S3 bucket is correct, but the IAM policy should be applied to the S3 bucket policy, not an IAM policy. IAM policies cannot restrict access based on the source of the traffic in this way.
Creating a VPC endpoint for the S3 bucket and using a S3 bucket policy to restrict access to the VPC endpoint is the correct method. The bucket policy can include a condition to allow access only from the VPC endpoint, ensuring all traffic is over the private network.
Service-linked roles for EC2 are used for EC2 instance service-specific permissions, not for restricting S3 access to specific network paths like a VPC endpoint. This option doesn’t address the network-level restriction requirement.
A NAT gateway is not necessary for restricting S3 access to a VPC. NAT gateways are used for outbound internet access, not for controlling access between EC2 instances and S3 over private network routes.
If I had to guess, I’d say the answer is:
Create a VPC endpoint for the S3 bucket, and create a S3 bucket policy that conditionally limits all S3 actions on the bucket to the VPC endpoint as the source.