title: AWS Load Balancer security group between ec2
body: <p>I have set up an AWS Elastic Load Balancer and AutoScaling Group of 30 instances.</p>
  
  <p>So under <code>AutoScaling Group</code> and <code>Load Balancer</code> I have 30 instances <code>InService</code>. And each instance is running a proxy server to receive http requests.</p>
  
  <p>What if I want to run another program in a separate instance that is not one of those <code>30 instances</code>?</p>
  
  <p>If I want to send <code>http</code> request through the Load Balancer, do I have to run the program only under the 30 instances associated with the <code>AutoScaling</code> group and <code>Load Balancer</code>? I am trying to run a program that sends <code>http request</code> through the load balancer in a separate <code>ec2</code> that is not associated with the load balancer but send through the <code>load balancer</code>'s <code>dns</code> . But this is hanging forever and eventually timed out.</p>
  
  <p>Please help me~! Thanks!</p>