nginx 配置为授权域名禁止访问

server {
    listen 80 default_server;
    listen [::]:80 default_server;
    server_name _;
    #return 444; # 关闭连接而不发送响应头
    #root         /usr/share/nginx/html;

    location / {
        charset utf-8;
        default_type application/json;
        return 200 '{"code":200,"msg":"成功"}';
    }
}

server {
    listen 443 ssl default_server;
    listen [::]:443 ssl default_server;
    server_name _;
    ssl_reject_handshake on; # Nginx 1.19.4+版本支持


    #ssl_certificate      /root/ssl/_.xxx.cn.pem;
    #ssl_certificate_key  /root/ssl/_.XXX.cn.key;
    #root         /usr/share/nginx/html;
}