1.1  服务器软件安装

安裝PPTP  Server 所需的软件:

  • 安装PPTP:

sudo apt-get install pptpd

linux下PPTP Server测试环境搭建-LMLPHP

PPTP Server的软件安装很简单,只需要安装pptpd就可以了。

1.2  配置

  • 执行命令vi /etc/pptpd.conf配置pptpd.conf文件,增加修改如下:

------------------/etc/pptpd.conf-----------------------------

……#省略部分打印

#       3. No shortcuts in ranges! ie. 234-8 does not mean 234 to 238,

#          you must type 234-238 if you mean this.

#

#       4. If you give a single localIP, that's ok - all local IPs will

#          be set to the given one. You MUST still give at least one remote

#          IP for each simultaneous client.

#

# (Recommended)

#localip 192.168.0.1

#remoteip 192.168.0.234-238,192.168.0.245

localip 66.66.66.1  #server端地址

remoteip 66.66.66.2-100  #client端可分配地址段

-------------------------------------------------------------------

  • 执行命令vi /etc/ppp/pptpd-options配置pptpd-option文件,编辑修改如下:

------------------/etc/ppp/pptpd-options-----------------------------

……#省略部分打印

# (must match the second field in /etc/ppp/chap-secrets entries)

name 192.168.10.99      #修改用于认证的本机名,可直接使用IP地址

# Optional: domain name to use for authentication

# domain mydomain.net

# Strip the domain prefix from the username before authentication.

# (applies if you use pppd with chapms-strip-domain patch)

#chapms-strip-domain

# Encryption

# Debian: on systems with a kernel built with the package

# kernel-patch-mppe >= 2.4.2 and using ppp >= 2.4.2, ...

# {{{

#refuse-pap

#refuse-chap

#refuse-mschap      #注释掉默认拒绝的方式

# Require the peer to authenticate itself using MS-CHAPv2 [Microsoft

# Challenge Handshake Authentication Protocol, Version 2] authentication.

#require-mschap-v2       #注释掉默认允许的方式

# Require MPPE 128-bit encryption

# (note that MPPE requires the use of MSCHAP-V2 during authentication)

#require-mppe-128

require-chap   #添加允许的方式

# }}}

# Network and Routing

# If pppd is acting as a server for Microsoft Windows clients, this

# option allows pppd to supply one or two DNS (Domain Name Server)

# addresses to the clients.  The first instance of this option

# specifies the primary DNS address; the second instance (if given)

# specifies the secondary DNS address.

# Attention! This information may not be taken into account by a Windows

# client. See KB311218 in Microsoft's knowledge base for more information.

#ms-dns 10.0.0.1

#ms-dns 10.0.0.2

ms-dns 202.106.0.20

ms-dns 6.6.6.6  #添加server端为client分配的dns

……#省略部分打印

-------------------------------------------------------------------

  • 添加用户,编辑chap-secrets文件增加用户名密码:

---------------/etc/ppp/chap-secrets------------------

# Secrets for authentication using CHAP

# client        server  secret                  IP addresses

test-pptp      *       123456                  *

-----------------------------------------------------------

//*表示不指定服务器和IP地址

linux下PPTP Server测试环境搭建-LMLPHP

1.3  启动和关闭服务器

执行如下命令可以启动、停止或重启pptp server:

# /etc/init.d/pptpd start

# /etc/init.d/pptpd stop

# /etc/init.d/pptpd restart

可以查看进程检查服务器是否已启动:

linux下PPTP Server测试环境搭建-LMLPHP

1.4  启用服务器数据转发

通过前面的配置,pptp客户端应该已经可以正常拨号并获取地址,但是如果不启用服务器的数据转发,client即使拿到IP地址,流量也只能到达server而无法转发出去,可通过以下步骤启用服务器的数据转发。

  • 修改sysctl.conf文件启用forward:

# vi /etc/sysctl.conf

linux下PPTP Server测试环境搭建-LMLPHP

执行命令sysctl –p让修改生效:

linux下PPTP Server测试环境搭建-LMLPHP

  • 使用iptables规则

iptables -A INPUT -i eth0 -s 66.66.66.0/24 -j DROP

iptables -t nat -A POSTROUTING -s 66.66.66.0/24  -j SNAT --to-source 192.168.10.99  //192.168.10.99为服务器上实际网络出口的地址

1.5  测试

本处使用win7系统进行测试:

创建新的网络连接

linux下PPTP Server测试环境搭建-LMLPHP

linux下PPTP Server测试环境搭建-LMLPHP

linux下PPTP Server测试环境搭建-LMLPHP

linux下PPTP Server测试环境搭建-LMLPHP

创建完成后,修改VPN类型为PPTP:

linux下PPTP Server测试环境搭建-LMLPHP

拨号连接则可以正常从服务器上获取地址并连接网络:

linux下PPTP Server测试环境搭建-LMLPHP

查看获取到的地址和DNS:

linux下PPTP Server测试环境搭建-LMLPHP

路由跟踪可以看到所有访问外部网络的数据均经过pptp server进行转发:

linux下PPTP Server测试环境搭建-LMLPHP

电脑上抓包可以看到数据包已进行ppp和gre封装:

linux下PPTP Server测试环境搭建-LMLPHP

Server端:

linux下PPTP Server测试环境搭建-LMLPHP

05-25 23:34