v-p-n安装指南

OpenVZ架构需要检查相关模块（TUN/TAP/PPP）是否开启, 如果没有开启相关模块不能上网代理。

TUN模块已经启用
PPP模块已经启用

添加或删除VPN帐号：

一键安装

#!/bin/bash
 clear
 echo ""
 echo -e "\033[44;37m ###################################### \033[0m"
 echo -e "\033[44;37m #   PPTPD Installer for CentOS 6.x   # \033[0m"
 echo -e "\033[44;37m #                                    # \033[0m"
 echo -e "\033[44;37m #    The original from DiaHosting    # \033[0m"
 echo -e "\033[44;37m #                                    # \033[0m"
 echo -e "\033[44;37m # Modify by Jetso / Date: 2012-12-15 # \033[0m"
 echo -e "\033[44;37m #                                    # \033[0m"
 echo -e "\033[44;37m #   Weibo: http://t.qq.com/jetsor    # \033[0m"
 echo -e "\033[44;37m #                                    # \033[0m"
 echo -e "\033[44;37m #           Version: 1.0             # \033[0m"
 echo -e "\033[44;37m ###################################### \033[0m"
 echo ""

## Define ##
 get_char()
 {
 SAVEDSTTY=`stty -g`
 stty -echo
 stty cbreak
 dd if=/dev/tty bs=1 count=1 2> /dev/null
 stty -raw
 stty echo
 stty $SAVEDSTTY
 }
 echo ""
 echo -e "\033[47;30m * Press any key to start installing PPTP VPN \033[0m"
 echo -e "\033[47;30m * Or press Ctrl+C to cancel the installation \033[0m"
 char=`get_char`
 echo ""

## Start ##
 echo "nameserver 8.8.8.8
 nameserver 8.8.4.4
 search localdomain" >> /etc/resolv.conf
 service network restart

yum remove -y pptpd ppp
 iptables --flush POSTROUTING --table nat
 iptables --flush FORWARD
 rm -rf /etc/pptpd.conf
 rm -rf /etc/ppp

arch=`uname -m`
 wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.3.4-2.el6.$arch.rpm
 wget http://poptop.sourceforge.net/yum/stable/packages/ppp-2.4.5-23.0.rhel6.$arch.rpm
 wget http://poptop.sourceforge.net/yum/stable/packages/kernel_ppp_mppe-1.0.2-3dkms.noarch.rpm
 wget http://poptop.sourceforge.net/yum/stable/packages/dkms-2.0.17.5-1.noarch.rpm
 yum -y update
 yum -y upgrade
 yum -y install make libpcap iptables gcc-c++ logrotate tar cpio perl pam tcp_wrappers policycoreutils
 rpm -ivh dkms-2.0.17.5-1.noarch.rpm
 rpm -ivh kernel_ppp_mppe-1.0.2-3dkms.noarch.rpm
 rpm -qa kernel_ppp_mppe
 rpm -Uvh ppp-2.4.5-23.0.rhel6.$arch.rpm
 rpm -Uvh pptpd-1.3.4-2.el6.$arch.rpm

rm -r /dev/ppp
 mknod /dev/ppp c 108 0
 echo 1 > /proc/sys/net/ipv4/ip_forward
 echo "mknod /dev/ppp c 108 0" >> /etc/rc.local
 echo "echo 1 > /proc/sys/net/ipv4/ip_forward" >> /etc/rc.local
 echo "localip 10.0.10.1" >> /etc/pptpd.conf
 echo "remoteip 10.0.10.2-254" >> /etc/pptpd.conf
 echo "ms-dns 8.8.8.8" >> /etc/ppp/options.pptpd
 echo "ms-dns 8.8.4.4" >> /etc/ppp/options.pptpd

pass=`openssl rand 6 -base64`
 if [ "$1" != "" ]
 then pass=$1
 fi

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

iptables -t nat -A POSTROUTING -s 10.0.10.0/24 -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 10.0.10.0/24 -j TCPMSS --set-mss 1356
 iptables -I FORWARD -p tcp --syn -i ppp+ -j TCPMSS --set-mss 1356
 service iptables save

chkconfig iptables on
 chkconfig pptpd on

service iptables start
 service pptpd start

## Completed ##
 echo ""
 echo -e "\033[44;37m ###################################### \033[0m"
 echo -e "\033[44;37m #   PPTPD Installer for CentOS 6.x   # \033[0m"
 echo -e "\033[44;37m #                                    # \033[0m"
 echo -e "\033[44;37m #    The original from DiaHosting    # \033[0m"
 echo -e "\033[44;37m #                                    # \033[0m"
 echo -e "\033[44;37m # Modify by Jetso / Date: 2012-12-15 # \033[0m"
 echo -e "\033[44;37m #                                    # \033[0m"
 echo -e "\033[44;37m #   Weibo: http://t.qq.com/jetsor    # \033[0m"
 echo -e "\033[44;37m #                                    # \033[0m"
 echo -e "\033[44;37m #           Version: 1.0             # \033[0m"
 echo -e "\033[44;37m ###################################### \033[0m"
 echo ""
 echo -e "VPN service is installed, your username is\033[32m OTW\033[0m, password is\033[32m ${pass}\033[0m"
 echo ""

PPTPD一键安装包