如何利用nginx限制网站来源IP访问

location ~ ^/mysql_loging/ {
  allow 192.168.0.4;
  deny all;
}

location ~ .*\.(php|php5)?$ {
  fastcgi_pass 127.0.0.1:9000;
  fastcgi_index index.php;
  include fastcgi_params;
  fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
}

location / {
  deny 192.168.0.4;
  allow 192.168.1.0/16;
  allow 10.0.0.0/24;
  deny all;
}