Tips Of Setup VPN Server On Debian Linux VPS

As we all know, VPN is very important and widely used in our organizations and in daily work, the security and privacy of the internet is more and more important. For example, I have a iphone case website which is located in Japan, I must use VPN to visit it. Here, I will use Linode VPS as example to describe how to build a PPTP VPN server in Debian/Ubuntu Linux environment.

This tutorial also applies to Debian / Ubuntu Linux VPS / server based, has also been passed testing on DiaHosting, VPSYOU, Oplink, If you have any questions, welcome feedback.

Preparatory work:
A Xen-based VPS, at present few OpenVZ VPS support PPTP.  Remote SSH tools, putty or XShell.

1, install PPTP server
apt-get update
apt-get install pptpd

2.Configuring PPTP server
After the installation complete, use the editor which you are familiar with, such as vi, nano or visual management tool winscp to configure: edit/etc/pptpd.conf
Look for the following code:
#localip 192.168.0.1
#remoteip 192.168.0.234-238,192.168.0.245

Replace with:
localip 192.168.217.1
remoteip 192.168.217.234-238,192.168.217.245

3. Add PPTP VPN users
Edit: /etc/ppp/chap-secrets
add the following:
username pptpd password *
Where "username" is the user name of the account which you want to add to VPN, "password" is the password for your VPN account.

4. Modify the DNS server
Edit: /etc/ppp/options, add the following:
ms-dns 8.8.8.8
ms-dns 8.8.4.4

5. Open IPv4 forwarding
Edit /etc/sysctl.conf file, remove the note "#" before net.ipv4.ip_forward = 1
Run the following command to make configuration changes to take effect
sysctl-p
Restart pptpd service
/etc/init.d/pptpd restart

6. Install iptables

7. Open iptables forwarding
iptables -t nat -A POSTROUTING -s 192.168.217.0/24 -o eth0 -j MASQUERADE
iptables-save > /etc/iptables.pptp

8. Create iptables file in the directory/etc/network/if-up.d/, content as follows:
#! /bin/sh
iptables-restore