title: Enabling HSTS in AWS ELB application load balacer
body: <p>We like to enable HSTS to our IIS deployed web application.</p>
  
  <p>We have SSL terminating ELB Application load balancer. We have enabled the URL rewrite module in IIS and configured the x-Forward-Proto tag to decide and enable HSTS header in the response. </p>
  
  <p>Presently, ALB does not appear to pass custom headers from IIS to the ALB, to the end-user. We wanted to see if there is a way to enable HSTS either at ALB level where it can accept custom headers or if it can be set at IIS level and ALB can pass through the HSTS headers to the browser?</p>