[Symfony] How to set up remote debugging for symfony2

https://stackoverflow.com/questions/21024364/symfony2-app-dev-php-allow-access-only-to-ip

https://stackoverflow.com/questions/18517083/how-to-set-up-remote-debugging-for-symfony2-with-phpstorm-and-xdebug

https://www.nginx.com/resources/wiki/start/topics/recipes/symfony/