title: Nagios - HTTP WARNING: HTTP/1.1 403 Forbidden
body: <p>I am using Nagios XI. I entered following command in order to monitor <code>httpd</code> service of the remote Linux server (128.19.5.131):</p>
  
  <p><code>/usr/local/nagios/libexec/check_http -H 128.19.5.131</code></p>
  
  <p>It is giving me following output:</p>
  
  <p><code>HTTP WARNING: HTTP/1.1 403 Forbidden</code></p>