A research organization runs its photo analysis application on AWS. The application processes images uploaded by field scientists and stores them temporarily on an Amazon EC2 instance's locally attached Amazon Elastic Block Store (Amazon EBS) volume. Every evening, the processed images are uploaded to an Amazon S3 bucket for long-term storage. The solutions architect has discovered that the images are being uploaded to S3 through the public internet. The organization wants to ensure that the upload traffic to Amazon S3 remains private and does not use the public internet. Which solution will meet these requirements?