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 CentOS 安装和配置PPTP VPN
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CentOS 安装和配置PPTP VPN

PPTP 全称为 Point to Point Tunneling Protocol — 点到点隧道协议，是VPN协议中的一种。 虚拟专用网（VPN）被定义为通过一个公用网络（通常是因特网）建立一个临时的、安全的连接，是一条穿过混乱的公用网络的安全、稳定的隧道。虚拟专 用网是对企业内部网的扩展。虚拟专用网可以帮助远程用户、公司分支机构、商业伙伴及供应商同公司的内部网建立可信的安全连接，并保证数据的安全传输。虚拟 专用网可用于不断增长的移动用户的全球因特网接入，以实现安全连接；可用于实现企业网站之间安全通信的虚拟专用线路，用于经济有效地连接到商业伙伴和用户 的安全外联网虚拟专用网。

PPTP 全称为 Point to Point Tunneling Protocol — 点到点隧道协议，是VPN协议中的一种。

虚拟专用网（VPN）被定义为通过一个公用网络（通常是因特网）建立一个临时的、安全的连接，是一条穿过混乱的公用网络的安全、稳定的隧道。虚拟专 用网是对企业内部网的扩展。虚拟专用网可以帮助远程用户、公司分支机构、商业伙伴及供应商同公司的内部网建立可信的安全连接，并保证数据的安全传输。虚拟 专用网可用于不断增长的移动用户的全球因特网接入，以实现安全连接；可用于实现企业网站之间安全通信的虚拟专用线路，用于经济有效地连接到商业伙伴和用户 的安全外联网虚拟专用网。


CentOS-5 下配置PPTP VPN，安装PPTP需要ppp和iptables这两个软件支持

安装相关软件 32位版：

View Code TXT
yum install -y ppp iptables
wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.3.4-1.rhel5.1.i386.rpm
rpm -ivh pptpd-1.3.4-1.rhel5.1.i386.rpm

64位版：

View Code TXT
yum install -y ppp iptables
wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.3.4-1.rhel5.1.x86_64.rpm
rpm -ivh pptpd-1.3.4-1.rhel5.1.x86_64.rpm

接下来开始配置文件：

View Code TXT
vi /etc/ppp/options.pptpd

输入以下内容：

View Code TXT
name pptpd
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
require-mppe-128
proxyarp
lock
nobsdcomp
novj
novjccomp
nologfd
ms-dns 8.8.8.8
ms-dns 8.8.4.4

编辑完保存并退出！接着

View Code TXT
vi /etc/pptpd.conf

输入以下内容：

View Code TXT
option /etc/ppp/options.pptpd
logwtmp
localip 192.168.10.1
remoteip 192.168.10.2-40

后两行是vpn的ip地址分配，不能和本地的冲突。编辑完保存并退出！

View Code TXT
vi /etc/ppp/chap-secrets

输入以下内容：

View Code TXT
username1 pptpd password1 *
username2 pptpd password2 *
username3 pptpd password3 *

对就的用户名和密码，你可以更改！保存并退出！

View Code TXT
vi /etc/sysctl.conf

找到：

View Code TXT
net.ipv4.ip_forward = 0

更改为：

View Code TXT
net.ipv4.ip_forward = 1

保存并退出！再执行sysctl -p命令！
此时PPTPD配置完成！ 现在开始启动，输入：

View Code TXT
service pptpd start

配置iptables，首先输入

View Code TXT
service iptables start

启动，使用命令：

View Code TXT
iptables -t nat -A POSTROUTING -s 192.168.10.0/24 -o eth0 -j MASQUERADE

完成后：

View Code TXT
/etc/init.d/iptables save

保存，并且输入

View Code TXT
/etc/init.d/iptables restart

重新启动。

配置完成，如果你需要服务器启动时候自动启动VPN服务，还需要输入

View Code TXT
chkconfig pptpd on
chkconfig iptables on

到此为止，PPTP VPN就已配置完成。

Last modified onSunday, 14 October 2012 04:07

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160.435115999936include( '/var/www/vhosts/shan.info/httpdocs/templates/gk_publisher/html/com_k2/templates/default/item.php' ).../HtmlView.php:701
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