title: Elastic Load Balancer pointing at Private Subnet
body: <p>I've created a internet-facing Elastic Load Balancer to point at my EC2 Instances in an VPC as I have many times before however with this one I am using a private subnet with a nat gateway to control outgoing traffic and channel it all through a whitelisted IP.</p>
  
  <p>Unfortunately this loadbalancer alone is having intermittent connection problems which is causing all kinds of issues including Cloudfront reliably contacting the origin site.</p>
  
  <p>This works fine with a public subnet (infact I've now swapped it straight out) but not with a private subnet.</p>
  
  <p>Any thoughts would be gratefully recieved,</p>
  
  <p>Chris</p>