I have searched this forum and found that most of the questions related to reverse proxy is unanswered. I just want to achieve nginx reverse proxy with ISPconfig ( Apache ). I tried Rackster's nginx plugin hosted on Github. It doesn't work for LetsEncrypt. So, if I copy "nginx_plugin.inc.php" to /server/plugins-enabled/ folder and "nginx_vhost.conf.master" to /server/conf-custom/ folder then can we get nginx vhsot file in /etc/nginx/sites-enabled/ or any other idea to achieve nginx reverse proxy with apache on ISPconfig3.1 ( LetsEncrypt ). Please help.