1.1查看系统是否支持PPP

[root@caojiaoyue ~]# cat /var/ppp

cat: /var/ppp: No such file or directory

如果出现以上提示则说明ppp是开启的，可以正常架设pptp服务，若出现permission denied等提示，你需要先去vps面板里看看有没有enable ppp的 功能开关，如果没有则需要发个消息给你的提供商，让他们帮你开通，

1.2设置内核转发

  sed -i's#net.ipv4.ip_forward = 0#net.ipv4.ip_forward = 1#g'  /etc/sysctl.conf

  grep forw/etc/sysctl.conf

  sysctl -p

1.3安装pptp

需要安装epel源

wget -O /etc/yum.repos.d/epel.repohttp://mirrors.aliyun.com/repo/epel-6.repo

yum -y install pptpd

1.4 配置pptp

vim /etc/pptpd.conf

localip 10.0.0.9

remoteip 192.168.0.234-238

# 添she加本机公网IP（localip），分配×××用户的内网网段（remoteip）。

1.5设置用户与密码

vim /etc/ppp/chap-secrets

caojiaoyue * 123456 *

1.6 启动pptp

/etc/init.d/pptpd start

[root@caojiaoyue ~]# netstat -lntup|grep"ppt"

tcp       0      0 0.0.0.0:1723                0.0.0.0:*                   LISTEN      41269/pptpd        

[root@caojiaoyue ~]#

注意默认端口是1723

1.7vpn日志配置

因为每次登陆和退出都会执行2个shell脚本

/etc/ppp/ip-up

/etc/ppp/ip-down

在这两个文件中加入日志命令

vim /etc/ppp/ip-up

#!/bin/bash

# This file should not be modified -- make localchanges to

# /etc/ppp/ip-up.local instead

PATH=/sbin:/usr/sbin:/bin:/usr/bin

export PATH

LOGDEVICE=$6

REALDEVICE=$1

[ -f/etc/sysconfig/network-scripts/ifcfg-${LOGDEVICE} ] && /etc/sysconfig/network-scripts/ifup-post--realdevice ${REALDEVICE} ifcfg-${LOGDEVICE}

/etc/ppp/ip-up.ipv6to4 ${LOGDEVICE}

[ -x /etc/ppp/ip-up.local ] &&/etc/ppp/ip-up.local "$@"

echo"$PEERNAME 分配IP: $5 登录IP: $6 登录时间:`date -d today +%F_%T`" >> /var/log/pptpd.log

exit 0

[root@caojiaoyue ~]# vim /etc/ppp/ip-down

#!/bin/bash

# This file should not be modified -- make localchanges to

# /etc/ppp/ip-down.local instead

PATH=/sbin:/usr/sbin:/bin:/usr/bin

export PATH

LOGDEVICE=$6

REALDEVICE=$1

/etc/ppp/ip-down.ipv6to4 ${LOGDEVICE}

[ -x /etc/ppp/ip-down.local ] &&/etc/ppp/ip-down.local "$@"

/etc/sysconfig/network-scripts/ifdown-post--realdevice ${REALDEVICE} \

   ifcfg-${LOGDEVICE}

echo"$PEERNAME 下线IP: $6 下线时间: `date -d today +%F_%T`">> /var/log/pptpd.log

exit 0