PPTP_VPN_installation.md

PPTP VPN installation guide

Warning! PPTP VPN protocol is not secured! It used just to bypass Internet restrictions.

Note! Linux based operating system must be installed on the server.

1. VPN installation

apt-get install pptpd

2. Adding VPN users

Open configuration file /etc/ppp/chap-secrets and add new users:

username * password *

3. Configuring DNS

Open configuration file /etc/ppp/pptpd-options and add the next DNS records:

ms-dns 8.8.8.8
ms-dns 8.8.4.4

4. Configuring connection timeout

Open configuration file /etc/ppp/pptpd-options and modify the necessary parameter (timeout in seconds):

idle 900

5. Configuring firewall (iptables)

5.1 Allow VPN connections

iptables -A INPUT -i eth0 -p tcp --dport 1723 -j ACCEPT

iptables -A INPUT -i eth0 -p gre -j ACCEPT

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

iptables -A FORWARD -i ppp+ -o eth0 -j ACCEPT

iptables -A FORWARD -i eth0 -o ppp+ -j ACCEPT

5.2 Save firewall rules

iptables-save

5.3 Save firewall rules permanently

netfilter-persistent save

6. Configuring network

6.1 Enable IP forwarding

Open configuration file /etc/sysctl.conf and uncomment the next line:

net.ipv4.ip_forward=1

6.2 Apply the changes

sysctl -p

7. Starting VPN

/etc/init.d/pptpd start