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#!/bin/bash PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH #=============================================================================================== # SYSTEM REQUIRED: CentOS-5 (32bit/64bit) or CentOS-6 (32bit/64bit) # DESCRIPTION: install pptpd #=============================================================================================== cur_dir=`pwd` #remove installed pptpd & ppp 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` #download pptpd-1.3.4-2 if [ -s pptpd-1.3.4-2.el6.$arch.rpm ]; then echo "pptpd-1.3.4-2.el6.$arch.rpm [found]" else echo "pptpd-1.3.4-2.el6.$arch.rpm not found!!!download now......" if ! wget http://teddysun.googlecode.com/files/pptpd-1.3.4-2.el6.$arch.rpm;then echo "Failed to download pptpd-1.3.4-2.el6.$arch.rpm,please download it to $cur_dir directory manually and rerun the install script." exit 1 fi fi #install some necessary tools yum -y install make libpcap iptables gcc-c++ logrotate tar cpio perl pam tcp_wrappers dkms kernel_ppp_mppe ppp rpm -ivh pptpd-1.3.4-2.el6.$arch.rpm 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 172.16.36.1" >> /etc/pptpd.conf echo "remoteip 172.16.36.2-254" >> /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 "vpn pptpd ${pass} *" >> /etc/ppp/chap-secrets iptables -t nat -A POSTROUTING -s 172.16.36.0/24 -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 172.16.36.0/24 -j TCPMSS --set-mss 1356 service iptables save chkconfig --add pptpd chkconfig pptpd on service iptables restart service pptpd start echo "VPN service is installed, your VPN username is vpn, VPN password is ${pass}" exit