IAMポリシーに負けない！S3バケットポリシーのIP制限

Denyは強い！

{
    "Version": "2008-10-17",
    "Statement": [
        {
            "Sid": "IPDeny",
            "Effect": "Deny",
            "Principal": {
                "AWS": "*"
            },
            "Action": "s3:*",
            "Resource": "arn:aws:s3:::${bucket_name}/*",
            "Condition": {
                "NotIpAddress": {
                    "aws:SourceIp": [
                        "203.0.113.1/32"
                    ]
                }
            }
        }
    ]
}