Restrict access to resources based on network CIDRs

aws-scp-network.json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "RestrictAccessBasedOnNetwork",
      "Effect": "Deny",
      "Action": [
        "*"
      ],
      "Resource": [
        "*"
      ],
      "Condition": {
        "NotIpAddress": {
          "aws:SourceIp": [
            "192.0.2.0/24",
            "203.0.113.0/24"
          ]
        }
      }
    }
  ]
}