#!/bin/bash
## pptp.sh is writed by Mislost.
## Auto install and config pptpd vpn server
## Update system and install pptp
sudo apt-get -y update
sudo apt-get -y install ppp pptpd
## get ip and remoteip
PRIVATE_IP=`ifconfig eth0 | grep "inet addr:" | sed -n 's/.*inet addr:\(.*\) B.*/\1/p'`
SUBNET=`echo ${PRIVATE_IP%.*}.10-250`
## config /etc/pptpd.conf
sudo sed -i "s/^#localip .*/localip $IP/;s/^#remoteip.*/remoteip $SUBNET/" /etc/pptpd.conf
## config /etc/ppp/options
sudo sed -i 's/^# ms-dns.*/ms-dns 8.8.8.8/' /etc/ppp/options
## create vpn account
sudo sh -c 'echo "test pptpd test *" >> /etc/ppp/chap-secrets'
## config ip_forward
sudo sed -i 's/^# \(net.ipv4.ip_forward=\).*/\1=1/' /etc/sysctl.conf
sudo sysctl -p
## iptables forward
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
echo "sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE" >> /etc/rc.local
sudo iptables -A FORWARD -p tcp --syn -s ${PRIVATE_IP%.*}.0/24 -j TCPMSS --set-mss 1356
echo "sudo iptables -A FORWARD -p tcp --syn -s ${PRIVATE_IP%.*}.0/24 -j TCPMSS --set-mss 1356
" >> /etc/rc.local
## restart pptpd service
sudo killall pptpd
sudo service pptpd restart
##
echo "Successful~!"
