title: AWS Resource policy on API Gateway
body: <p>I'm trying to <a href="https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-resource-policies.html" rel="nofollow noreferrer">use Resource Policy IP whitelisting to protect API Gateway</a>. I have following questions and am not able to find public doc for these:</p>
  
  <ul>
  <li>Can I make resource policy only effect to a specific stage's API gateway? If yes, how?</li>
  <li>How much time does propagation need after I make a change on the policy?</li>
  <li>Can Resource Policy be used on API with protocol WebSocket and endpoint type Regional? (Looks like not, I don't see option of it)</li>
  <li>Does Resource Policy have version control? (looks like it does not)</li>
  </ul>
  
  <p>Thanks</p>