安裝*** 配置好yum源
yum -y install ppp
yum -y install pptpd
服務ip地址
eth0 Link encap:Ethernet HWaddr 00:16:3E:00:0A:85
inet addr:10.90.16.156 Bcast:10.90.31.255 Mask:255.255.240.0（內網）
eth1 Link encap:Ethernet HWaddr 00:16:3E:00:05:B9
inet addr:58.96.171.210 Bcast:58.96.171.255 Mask:255.255.252.0（外網）
vi /etc/pptpd.conf
ppp /usr/sbin/pppd
option /etc/ppp/options.pptpd
#logwtmp 註釋這一行
localip 10.90.16.156
remoteip 192.168.0.234-238,192.168.0.245 ***客戶端獲取的ip地址範圍
vi /etc/ppp/options.pptpd
添加 爲***客戶端指定dns
ms-dns 202.106.196.115
ms-dns 8.8.8.8
vi /etc/ppp/chap-secrets
# Secrets for authentication using CHAP
# client server secret IP addresses
test pptpd test123 *
添加用戶名，密碼 ，* 代表從IP地址範圍內獲取，或者直接指定
1. 修改內核文件，使系統支持轉發
#vi /etc/sysctl.conf
net.ipv4.ip_forward = 1
然後執行下列命令，使其生效：
#sysctl –p
配置iptables
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 $1}'`
iptables -A FORWARD -p tcp --syn -s 172.16.36.0/24 -j TCPMSS --set-mss 1356
保存一下iptables
/sbin/service iptables save
啓動pptpd 服務
/etc/init.d/pptpd start 檢查1723端口
2 ，增加***客戶端ip範圍
vi /etc/pptpd.conf
修改
remoteip 192.168.0.234-243 來修改允許客戶端連接的ip範圍
保存退出
重啓pptpd 服務
執行 service pptpd restart
ok 之後即生效
3，增加***客戶端賬號
vi /etc/ppp/chap-secrets
內容如下
# Secrets for authentication using CHAP
#client server secret IP address
vacn_*** pptpd vacn123!@# *
此行即爲創建密碼爲vacn123!@# 的賬號vacn_***
添加其他賬號按照 vacn_*** pptpd vacn123!@# * 此種格式
vacn_*** ----用戶名
test123!@#3456---密碼
* -----------***連接的ip *爲自動分配給***客戶端192.168.0.234-243 其中的一個地址，或者直接指定地址
保存退出，不用重啓pptpd服務
一鍵安裝腳本
#!/bin/bash function install***(){
echo "begin to install *** services"; #check wether vps suppot ppp and tun yum remove -y pptpd ppp
iptables --flush POSTROUTING --table nat
iptables --flush FORWARD rm -rf /etc/pptpd.conf rm -rf /etc/ppp
arch=`uname -m` wget http://www.hi-vps.com/downloads/dkms-2.0.17.5-1.noarch.rpm wget http://wty.name/linux/sources/kernel_ppp_mppe-1.0.2-3dkms.noarch.rpm wget http://www.hi-vps.com/downloads/kernel_ppp_mppe-1.0.2-3dkms.noarch.rpm wget http://www.hi-vps.com/downloads/pptpd-1.3.4-2.el6.$arch.rpm wget http://www.hi-vps.com/downloads/ppp-2.4.5-17.0.rhel6.$arch.rpm
yum -y install make libpcap iptables gcc-c++ logrotate tar cpio perl pam tcp_wrappers
rpm -ivh dkms-2.0.17.5-1.noarch.rpm
rpm -ivh kernel_ppp_mppe-1.0.2-3dkms.noarch.rpm
rpm -qa kernel_ppp_mppe
rpm -Uvh ppp-2.4.5-17.0.rhel6.$arch.rpm
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 "*** 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 iptables on
chkconfig pptpd on
service iptables start
service pptpd start
echo "*** service is installed, your *** username is ***, *** password is ${pass}" } function repaire***(){
echo "begin to repaire ***"; mknod /dev/ppp c 108 0
service iptables restart
service pptpd start} function add***user(){
echo "input user name:"
read username echo "input password:"
read userpassword echo "${username} pptpd ${userpassword} *" >> /etc/ppp/chap-secrets
service iptables restart
service pptpd start} echo "which do you want to?input the number."echo "1. install *** service"echo "2. repaire *** service"echo "3. add *** user"read num
case "$num" in[1] ) (install***);;[2] ) (repaire***);;[3] ) (add***user);;*) echo "nothing,exit";;esac