I'm running Laravel on an AWS EC2 instance, and I'm trying to use Nginx. I get a 403 Forbidden HTTP response when I try to visit the public IP address.

site config

server {
        listen 80 default_server;
        # listen [::]:80 default_server ipv6only=on;

        root /home/ubuntu/public_html;
        index index.html index.htm index.php;

        # Make site accessible from http://localhost/
        server_name 54.23.4.31;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ /index.php$is_args$args;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules
        }

        location ~ \.php$ {
                try_files $uri /index.php =404;
                fastcgi_pass unix:/var/run/php5-fpm.sock;
                fastcgi_index index.php;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                include fastcgi_params;
        }
}