AWS Billing Conductor resource-based policy examples

Restricting Amazon S3 bucket access to specific IP addresses

The following example grants permissions to any user to perform any Amazon S3 operations on objects in the specified bucket. However, the request must originate from the range of IP addresses specified in the condition.

The condition in this statement identifies the 54.240.143.* range of allowed Internet Protocol version 4 (IPv4) IP addresses, with one exception: 54.240.143.188.

The Condition block uses the IpAddress and NotIpAddress conditions and the aws:SourceIp condition key, which is an AWS wide condition key. For more information about these condition keys, see Specifying Conditions in a Policy. Theaws:sourceIp IPv4 values use the standard CIDR notation. For more information, see IP Address Condition Operators in the IAM User Guide.

{
  "Version": "2012-10-17",
  "Id": "S3PolicyId1",
  "Statement": [
    {
      "Sid": "IPAllow",
      "Effect": "Allow",
      "Principal": "*",
      "Action": "s3:*",
      "Resource": "arn:aws:s3:::examplebucket/*",
      "Condition": {
         "IpAddress": {"aws:SourceIp": "54.240.143.0/24"},
         "NotIpAddress": {"aws:SourceIp": "54.240.143.188/32"} 
      } 
    } 
  ]
}