PPTPServer

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本文档详细介绍了如何在 Ubuntu 12.4 Server 上搭建 PPTP 服务器，包括安装 pptp-server 软件包、配置服务器 IP 和客户端 IP 地址范围、设置 DNS 服务器、创建 VPN 用户及配置 IP 转发等步骤。

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PPTPServer - Community Help Wiki

PPTPServer

This guide has been tested with Ubuntu 12.4 Server.

Setup PPTP Server

First we need to install pptp server using apt-get

# sudo apt-get install pptpd

Then we need to configure the pptpd.

# sudo nano /etc/pptpd.conf

Add server IP and client IP at the end of the file. You can add like below:

localip 192.168.0.1
remoteip 192.168.0.100-200

This sets up the PPTP server to use IP 192.168.0.1 while distributing the IP range 192.168.0.100 to 192.168.0.200 to PPTP clients. Change these as you wish as long as they are private IP addresses and do not conflict with IP addresses already used by your server.

Configure DNS servers to use when clients connect to this PPTP server

# sudo nano /etc/ppp/pptpd-options

Uncomment the ms-dns and add google like below or OpenDNS

ms-dns 8.8.8.8
ms-dns 8.8.4.4

Now add a VPN user in /etc/ppp/chap-secrets file.

# sudo nano /etc/ppp/chap-secrets

The column is username. Second column is server name, you can put “pptpd” in there. Third column is password. The last column is the IP addresses, you can put * to allow all IP.

# client        server  secret                  IP addresses
username * myPassword *

Finally start your server

# /etc/init.d/pptpd restart

Setup IP Forwarding

To enable IPv4 forward. Change /etc/sysctl.conf file, add forward rule below.

# sudo nano /etc/sysctl.conf

Uncomment the line

net.ipv4.ip_forward=1

Then reload the configuration

sudo sysctl -p

Add forward rule in iptables

# sudo nano /etc/rc.local

adding to the bottom just before the exit 0

iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o eth0 -j MASQUERADE
iptables -A FORWARD -p tcp --syn -s 192.168.0.0/24 -j TCPMSS --set-mss 1356

This example is using 192.168.0 for its PPTP subnet. The second rule adjusts the MTU size :

You are done. Just reboot your server and you should be able to connect to using PPTPD and send all your traffic through this server.

CategoryVPN CategoryVPN

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PPTPServer (last edited 2014-11-23 12:49:29 by jwt)

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