title: Browser being blocked (forbidden) behind proxy
body: <p>I have 2 servers behind a Load Balancer. This LB has SSL configured on it.
  Almost 50 different clients are able to connect to my website successfully, except 1 client which received a Forbidden (403) message from the browser.</p>
  
  <p>After some investigation with him, I discovered he is behind a proxy server.</p>
  
  <p>I suggested he assign my domain to bypass proxy, but he argued that it would exploit his system.</p>
  
  <p>I could not figure out anyway to fix this problem yet.</p>
  
  <p>What solutions might there be? Or even if my suggestion to him (to put my domain to bypass proxy) is even correct?</p>
  
  <p>The Website is: <a href="https://www.arkemessenger.com/" rel="nofollow">Arke</a></p>