实验环境：

CentOS6.8

1、连接测试：

　　在/etc/httpd/conf/httpd.conf

　　telnet 172.16.252.242 80

　　GET /index.html HTTP/1.1

　　Host: 172.16.252.242

# KeepAlive: Whether or not to allow persistent connections (more than# one request per connection). Set to "Off" to deactivate.#KeepAlive Off　　#长连接状态是关闭的

[root@www ~18:47:34]#telnet 172.16.252.242 80Trying 172.16.252.242...Connected to 172.16.252.242.Escape character is '^]'.GET /index.html HTTP/1.1Host: 172.16.252.242 Connection closed by foreign host.

修改KeepAlive:/etc/httpd/conf/httpd.conf

KeepAlive On　　#开启## MaxKeepAliveRequests: The maximum number of requests to allow# during a persistent connection. Set to 0 to allow an unlimited amount.# We recommend you leave this number high, for maximum performance.#MaxKeepAliveRequests 100## KeepAliveTimeout: Number of seconds to wait for the next request from the# same client on the same connection.#KeepAliveTimeout 15　　#等待时间

[root@conf localhost6]#service httpd restart　　#修改配置文件，必须重新启动服务

Stopping httpd: [ OK ]

Starting httpd: httpd: apr_sockaddr_info_get() failed for localhost6.8.localdomain

httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName

[ OK ]

#此时一次请求结束后，不会退出，而是等待下次请求，超过等待时间，则退出

 2、http的访问控制——认证

　　1）在主配置文件定义安全域

# DocumentRoot: The directory out of which you will serve your# documents. By default, all requests are taken from this directory, but# symbolic links and aliases may be used to point to other locations.#DocumentRoot "/www/host1/" #此目录下有个目录admin下的文件需要用户进行http的认证访问

[root@admin localhost6]#pwd/www/host1/admin[root@admin localhost6]#cat admin.html 　　#此文件需要认证才能访问
 warn:admin area

[root@admin localhost6]#vi /etc/httpd/conf/httpd.conf  #配置的文件

     
      　　 #认证后才能显示的目录        Options None　　　　　　　　　#INDEXES等设置不生效        AllowOverride None　　　　　 #覆盖不生效        Authtype Basic　　　　　　　　#认证方式：basic和digest        Authname "input your username and passwd" #认证提示页显示        Authuserfile "/etc/httpd/conf/.htpasswd"　　#认证校验的密码文件        require user tom　　　　　　　　　　　　　　#需要认证的用户#       require valid-user　　　　　　　　　　　　　#密码文件中的用户都需要认证
     

2）创建账号和密码校验的加密文件

[root@admin localhost6]#htpasswd -c -m /etc/httpd/conf/.htpasswd tomNew password: Re-type new password: Adding password for user tom[root@admin localhost6]#htpasswd  -m /etc/httpd/conf/.htpasswd jeyNew password: Re-type new password: Adding password for user jey #-c：自动创建指定的密码文件，仅首次创建文件时使用 #-m:用md5加密方式进行加密 #tom；需要认证的用户

 

#重启服务： [root@admin localhost6]#service httpd reloadReloading httpd:

 

输入用户名和密码进行验证。