Creates an Amazon S3 bucket policy that white-lists a list of IP addresses in the CIDR format

s3_bucket_policy-whitelist_ip_addresses.json

{
    "Version": "2012-10-17",
    "Id": "customerpoc",
    "Statement": [
        {
            "Sid": "IPDeny",
            "Effect": "Deny",
            "Principal": {
                "AWS": "*"
            },
            "Action": "s3:*",
            "Resource": "arn:aws:s3:::bucketname",
            "Condition": {
                "NotIpAddress": {
                    "aws:SourceIp": [
                        "10.20.30.40/32",
                        "11.22.33.44/32"
                    ]
                }
            }
        }
    ]
}