需要下面脚本运行，可以使用 amazon 免费的一年的 vpn
可以翻墙了。#
Automaticlly install pptpd on Amazon EC2 Amazon Linux#
#
Ripped from http://blog.diahosting.com/linux-tutorial/pptpd/#
pptpd source rpm packing by it's authors#
#
WARNING:#
first ms-dns setting to 172.16.0.23, 172.16.0.23 was showing on my#
/etc/resolv.conf, I'm not sure this is the same on all Amazon AWS zones.#
#
You need to adjust your "Security Groups" which you are using too.#
The security rules which I'm using looks like:#
=================================#
ALL tcp 0 65535 0.0.0.0/0#
ALL udp 0 65535 0.0.0.0/0#
=================================#
#
Authors: yinhm#
Version: 0.1.0#
URL: http://yinhm.appspot.com/#
Edit by: Alvin Ye#
Run by: curl -s https://gist.github.com/999866.txt | sudo bash#
yum -y install make
yum remove -y pptpd ppp ppp-devel
iptables --flush POSTROUTING --table nat
iptables --flush FORWARD
rm -rf /etc/pptpd.conf
rm -rf /etc/ppp
yum -y install rpm-build gcc
yum -y install ppp ppp-devel
mkdir ~/src
cd ~/src
wget http://yinhm.github.com/downloads/pptpd-1.3.4-1.amzn1.src.rpm
rpmbuild --rebuild pptpd-1.3.4-1.amzn1.src.rpm
below line is error is is x64 ,so change the path and is ok#
rpm -i ../rpmbuild/RPMS/i386/pptpd-1.3.4-1.*.i386.rpm
sed -i 's/^logwtmp/#logwtmp/g' /etc/pptpd.conf
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 208.67.222.222" >> /etc/ppp/options.pptpd
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 $1}'
iptables -A FORWARD -p tcp --syn -s 192.168.240.0/24 -j TCPMSS --set-mss 1356
service iptables save
chkconfig iptables on
chkconfig pptpd on
service iptables start
service pptpd start
echo -e "VPN service is installed, your VPN username is \033[1mvpn\033[0m, VPN password is \033[1m${pass}\033[1m"