setup-vpn.sh

#!/bin/bash

read -e -p "Type a username you will use to connect to the VPN: " VPN_USER
read -e -p "Type a password for that user in the VPN: " VPN_PASSWORD

# setup PPTP
apt-get install pptpd -y
echo "$VPN_USER pptpd $VPN_PASSWORD *" >>/etc/ppp/chap-secrets
echo "localip 10.0.0.1" >>/etc/pptpd.conf
echo "remoteip 10.0.0.100-200" >>/etc/pptpd.conf
echo "ms-dns 8.8.8.8" >>/etc/ppp/pptpd-options
echo "ms-dns 8.8.4.4" >>/etc/ppp/pptpd-options
service pptpd restart

# setup NAT
echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf
sysctl -p
iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -o venet0 -j MASQUERADE

# install iptables-persistent
echo "iptables-persistent	iptables-persistent/autosave_v4	boolean	true" | debconf-set-selections
echo "iptables-persistent	iptables-persistent/autosave_v6	boolean	true" | debconf-set-selections
apt-get install iptables-persistent