yum install nginx -y   
yum install httpd -y

systemctl start nginx
systemctl  start httpd

[root@243-ceshi download]# htpasswd -cb /dwz/htpasswd kaifa2  vrgv25.      
 Adding password for user kaifa2
[root@243-ceshi download]# cat /dwz/htpasswd
kaifa2:$apr1$UJrSJ10s$asQLF/ImBymWnB1zk5U6S0

注：/dwz目录需要存在，要不会报错

[root@243-ceshi download]#vim /etc/nginx/nginx.conf.d/download.conf

server {
        listen       30000;                                          #端口号自定义
        root         /usr/share/nginx/html;                           
        auth_basic "This is input password";                         #网页输入密码提示语
        auth_basic_user_file /dwz/htpasswd;                          #密文存放位置
        # Load configuration files for the default server block.

location /download {                                                  #下面是自定义下载引导位置，当访问ip:30000/download后会转到服务器的/download/目录下，提供下载
    charset utf-8;                                                    #支持中文
    alias /download/;                                                 #转的下载目录
    index index.html;
    autoindex on;
    autoindex_exact_size off;
}
}

注：download.conf配置文件是自定义创建的，并被nginx管理

systemctl restart nginx