DocumentRoot /www/example1-80
ServerName www.example1.com
</VirtualHost>
<VirtualHost 172.20.30.40:8080>
DocumentRoot /www/example1-8080
ServerName www.example1.com
</VirtualHost>
<VirtualHost 172.20.30.50:80>
DocumentRoot /www/example2-80
ServerName www.example1.org
</VirtualHost>
<VirtualHost 172.20.30.50:8080>
DocumentRoot /www/example2-8080
ServerName www.example2.org
</VirtualHost>
(3)
单个IP地址的服务器上基于域名的虚拟主机配置：
# Ensure that Apache listens on port 80
Listen 80
# Listen for virtual host requests on all IP addresses
NameVirtualHost *:80
<VirtualHost *:80>
DocumentRoot /www/example1
ServerName www.example1.com
ServerAlias example1.com. *.example1.com
# Other directives here
</VirtualHost>
<VirtualHost *:80>
DocumentRoot /www/example2
ServerName www.example2.org
# Other directives here
</VirtualHost>
(4)在多个IP地址的服务器上配置基于域名的虚拟主机：
Listen 80
# This is the "main" server running on 172.20.30.40
ServerName server.domain.com
DocumentRoot /www/mainserver
# This is the other address
NameVirtualHost 172.20.30.50
<VirtualHost 172.20.30.50>
DocumentRoot /www/example1
ServerName www.example1.com
# Other directives here ...
</VirtualHost>
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<VirtualHost 172.20.30.50>
DocumentRoot /www/example2
ServerName www.example2.org
# Other directives here ...
</VirtualHost>
(5)在不同的端口上运行不同的站点(基于多端口的服务器上配置基于域名的虚拟主机)：
Listen 80
Listen 8080
NameVirtualHost 172.20.30.40:80
NameVirtualHost 172.20.30.40:8080
<VirtualHost 172.20.30.40:80>
ServerName www.example1.com
DocumentRoot /www/domain-80
</VirtualHost>
<VirtualHost 172.20.30.40:8080>
ServerName www.example1.com
DocumentRoot /www/domain-8080
</VirtualHost>
<VirtualHost 172.20.30.40:80>
ServerName www.example2.org
DocumentRoot /www/otherdomain-80
</VirtualHost>
<VirtualHost 172.20.30.40:8080>
ServerName www.example2.org
DocumentRoot /www/otherdomain-8080
</VirtualHost>
(6)基于域名和基于IP的混合虚拟主机的配置:
Listen 80
NameVirtualHost 172.20.30.40
<VirtualHost 172.20.30.40>
DocumentRoot /www/example1
ServerName www.example1.com
</VirtualHost>
<VirtualHost 172.20.30.40>
DocumentRoot /www/example2
ServerName www.example2.org
</VirtualHost>
<VirtualHost 172.20.30.40>
DocumentRoot /www/example3
ServerName www.example3.net
</VirtualHost>
SSL加密的配置
首先在配置之前先来了解一些基本概念：
证书的概念：首先要有一个根证书，然后用根证书来签发服务器证书和客户证书，一般理解：服务器证书和客户证书是平级关系。SSL必须安装服务器证书来认证。 因此：在此环境中，至少必须有三个证书：根证书，服务器证书，客户端证书。 在生成证书之前，一般会有一个私钥，同时用私钥生成证书请求，再利用证书服务器的根证来签发证书。
SSL所使用的证书可以自己生成，也可以通过一个商业性 
