Which solution will meet these requirements with the LEAST development effort?

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In: MLS-C01
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A company plans to build a custom natural language processing (NLP) model to classify and prioritize user feedback.The company hosts the data and all machine learning (ML) infrastructure in the AWS Cloud.The ML team works from the company’s office, which has an IPsec VPN connection to one VPC in the AWS Cloud.The company has set both the enableDnsHostnames attribute and the enableDnsSupport attribute of the VPC to true.The company’s DNS resolvers point to the VPC DNS.The company does not allow the ML team to access Amazon SageMaker notebooks through connections that use the public internet.The connection must stay within a private network and within the AWS internal network.

Which solution will meet these requirements with the LEAST development effort?

Create a VPC interface endpoint for the SageMaker notebook in the VPC. Access the notebook through a VPN connection and the VPC endpoint.

Create a bastion host by using Amazon EC2 in a public subnet within the VPC. Log in to the bastion host through a VPN connection. Access the SageMaker notebook from the bastion host.

Create a bastion host by using Amazon EC2 in a private subnet within the VPC with a NAT gateway. Log in to the bastion host through a VPN connection. Access the SageMaker notebook from the bastion host.

Create a NAT gateway in the VPC. Access the SageMaker notebook HTTPS endpoint through a VPN connection and the NAT gateway.

Explanations:

A VPC interface endpoint allows secure, private connectivity to Amazon SageMaker, avoiding public internet access. The VPN connection ensures that the connection stays within the AWS internal network. This is the most efficient solution with minimal development effort.

A bastion host in a public subnet requires exposing the EC2 instance to the public internet, which contradicts the requirement of avoiding public internet access.

While a bastion host in a private subnet avoids exposure to the public internet, the NAT gateway adds unnecessary complexity. This is not the most efficient approach and requires additional resources.

A NAT gateway is used for internet-bound traffic, but the requirement is to avoid using the public internet for access. This option adds unnecessary complexity and doesn’t meet the requirement for private access within the AWS internal network.

2025-10-07

1 Comment

  1. Theresa
    Author

    I measure that the answer is:
    Create a VPC interface endpoint for the SageMaker notebook in the VPC. Access the notebook through a VPN connection and the VPC endpoint.

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