Symfony nginx virtual host - symfony

Question

I have a virtual server with nginx, with my Symfony project installed in /var/www/test. In /etc/nginx/site-avalible/test.conf I create this config:
server {
server_name test.dev www.test.dev;
root /var/www/test/web;
location / {
# try to serve file directly, fallback to app.php
try_files $uri /app.php$is_args$args;
}
location ~ ^/(app_dev|config)\.php(/|$) {
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_split_path_info ^(.+\.php)(/.*)$;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
fastcgi_param DOCUMENT_ROOT $realpath_root;
}
location ~ ^/app\.php(/|$) {
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_split_path_info ^(.+\.php)(/.*)$;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
fastcgi_param DOCUMENT_ROOT $realpath_root;
internal;
}
location ~ \.php$ {
return 404;
}
error_log /var/log/nginx/test_error.log;
access_log /var/log/nginx/test_access.log;
}
and then create symlink:
ln -s /etc/nginx/sites-available/test.conf /etc/nginx/sites-enabled/test.conf
and add rules to /etc/hosts:
127.0.0.1 test.dev
this is all done in the server. Then I know the IP of my virtual server and I create in my local computer in /etc/hosts:
82.91.183.61 test.dev
and then try to open in my browser but have a 502 error, why? And how can I correct the virtual host config for nginx and how do I open my project in my local computer if I know the IP and can create a virtual host?