配置完成后訪問仍不安全怎么解決？

1、添加server_name為空或者localhostserver {listen 80;server_name localhost;location / {if ($host ~ localhost) {return 403;}}}2、添加server_name為yourdnsserver{access_log /data/logs/nginx/access.log;listen 80;server_name yourdns;charset utf-8;root /data/www;index index.html index.htm index.php;location / {expires 1d;}}