一、建立密码文件

htpasswd -c /etc/httpd/conf/passwd.users admin
New password: admin
Re-type new password: admin

用户名admin  密码admin

二、修改配置文件

 在虚拟主机中加入：

<VirtualHost *:80>
     Options -Indexes FollowSymLinks
  #   ServerAdmin admin@test.com
        DocumentRoot "/var/www/html"
  #   ServerName test.com
         <Directory /var/www/html>
         AuthName "Need Password To Access"
         AuthType Basic
         AuthUserFile /ect/httpd/conf/passwd.users
         Require valid-user
         </Directory>
    ErrorLog logs/test.com
</VirtualHost>

三、启动apache

    检查apache配置文件语法

/usr/sbin/httpd -t

     出现 Syntax OK 就是是没有语法错误了，可以启动了

service httpd start


参考文章

http://www.cnblogs.com/jiji262/archive/2012/01/16/2323636.html