![]() ![]() To implement this restriction effectively, refer to the VPC Endpoint policy documentation. By doing so, you can ensure that the EC2 instances only respond to commands originating from principals within their original AWS account or organization. “If your EC2 instances are in a private subnet without access to the public network via a public EIP address or NAT gateway, you can still configure the System Manager service through a VPC endpoint. Because of that, understanding and mitigating the risks associated with its misuse is crucial to protect systems from this evolving threat,” they noted, and pointed out that the AWS Security team has also offered a solution to restrict the receipt of commands from the original AWS account/organization using the Virtual Private Cloud (VPC) endpoint for Systems Manager. “We strongly believe that threat actors will abuse this in real world attacks, if they don’t do that already.
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