examcloud-upgrade/nginx/prod-192.168.1.60-new/sites/black_domain.conf

  server {
    listen       80;
    server_name  cugb.ecs.qmth.com.cn  cugb.exam-cloud.cn nankai.exam-cloud.cn; # 指定需要限制的域名
    return       403; # 返回403禁止访问的状态码
  }