apache

httpd.conf

mod_autoindex - Apache HTTP サーババージョン 2.4

/etc/apache2/apache2.conf

  <Directory /var/www/html/>
    Options Indexes FollowSymLinks
    AllowOverride None
    Require all granted
    #
+   IndexOptions +FoldersFirst
+   IndexOptions +NameWidth=*
  </Directory>

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nginx

/etc/nginx/sites-available/default

Module ngx_http_autoindex_module

  server {
    listen 80 default_server;
    root /var/www/html/;
    index index.html index.htm index.nginx-debian.html;
    server_name _;
    location / {
+       autoindex on;
+       autoindex_localtime on;
        try_files $uri $uri/ =404;
    }
    location ~ \.php$ {
        root           /usr/share/nginx/html;
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  /usr/share/nginx/html$fastcgi_script_name;
        include        fastcgi_params;
    }
  }

DirectoryIndex を有効
サーバーのタイムゾーンを使用