title: Query via rest gives 403 unauthorized when in reverse proxy
body: <p>With my user I'm free to make any query I want, anyway if I try via REST I get 403. 
  Do I need to give some additional permission to my user?</p>
  
  <p><strong>Edit:</strong>
  It seems it only happens when I go to port 80, in my reverse proxy configuration (I followed the guide <a href="https://confluence.atlassian.com/kb/proxying-atlassian-server-applications-with-apache-http-server-mod_proxy_http-806032611.html" rel="nofollow noreferrer">here</a> ). I tried with 8080, direct access, and it works.</p>