pptpd for Debian

gistfile1.txt

# Automaticlly install pptpd on Debian Linux
# 
# Ripped from http://blog.diahosting.com/linux-tutorial/pptpd/
# pptpd source rpm packing by it's authors
#
# Authors: yinhm
# Version: 0.1.0
# URL: http://yinhm.appspot.com/


apt-get -y update
apt-get -y upgrade
apt-get remove -y pptpd ppp
iptables --flush POSTROUTING --table nat
iptables --flush FORWARD
rm -rf /etc/pptpd.conf
rm -rf /etc/ppp

apt-get -y install ppp pptpd

sed -i 's/^net.ipv4.ip_forward = 0/net.ipv4.ip_forward = 1/g' /etc/sysctl.conf
sysctl -p
echo "localip 192.168.240.1" >> /etc/pptpd.conf
echo "remoteip 192.168.240.2-100" >> /etc/pptpd.conf
echo "ms-dns 8.8.8.8" >> /etc/ppp/options.pptpd

pass=`openssl rand 8 -base64`
if [ "$1" != "" ]
then pass=$1
fi

echo "vpn pptpd ${pass} *" >> /etc/ppp/chap-secrets

iptables -t nat -A POSTROUTING -s 192.168.240.0/24 -j SNAT --to-source `ifconfig  | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk 'NR==1 { print $1}'`
iptables -A FORWARD -p tcp --syn -s 192.168.240.0/24 -j TCPMSS --set-mss 1356
iptables-save > /etc/iptables.up.rules
cat >>/etc/network/if-pre-up.d/iptables<<EOF
#!/bin/bash
/sbin/iptables-restore < /etc/iptables.up.rules
EOF
chmod +x /etc/network/if-pre-up.d/iptables

#chkconfig pptpd on

/etc/init.d/pptpd restart

echo -e "VPN service is installed, your VPN username is \033[1mvpn\033[0m, VPN password is \033[1m${pass}\033[1m"