linux中配置pptp服务器配置的方法

1、验证内核是否加载了MPPE模块：

modprobe ppp-compress-18 && echo MPPE is ok

2、安装所需的软件包：

yum -y install ppp
wget ftp://rpmfind.net/linux/epel/7/x86_64/p/pptpd-1.4.0-2.el7.x86_64.rpm
rpm -ivh pptpd-1.4.0-2.el7.x86_64.rpm

3、配置PPP和PPTP的配置文件：

grep ^[^#] /etc/ppp/options.pptpd
vi /etc/ppp/options.pptpd

name pptpd
#refuse-pap
#refuse-chap
#refuse-mschap
require-mschap-v2
require-mppe-128
ms-dns 8.8.8.8
ms-dns 8.8.4.4
proxyarp
lock
nobsdcomp
novj
novjccomp
nologfd

vi /etc/ppp/chap-secrets

username  pptpd  passwd  *

vi /etc/pptpd.conf

option /etc/ppp/options.pptpd
logwtmp
localip 192.168.0.1
remoteip 192.168.0.207-217

4、打开内核的IP转发功能：

vi /etc/sysctl.conf

net.ipv4.ip_forward = 1

/sbin/sysctl -p

5、配置防火墙和NAT转发

yum install iptables-services
systemctl stop firewalld.service
systemctl disable firewalld.service
systemctl enable iptables.service
systemctl start iptables.service

开启包转发：

iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o eno16777736 -j MASQUERADE
service iptables save
service iptables restart

开放端口和gre协议：

iptables -A INPUT -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 1723 -j ACCEPT
iptables -A INPUT -p gre -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o eno16777736 -j MASQUERADE

添加规则：

iptables -A INPUT -p gre -j ACCEPT
iptables -A INPUT -p tcp -m tcp --dport 1723 -j ACCEPT
iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -s 192.168.0.0/24 -o eno16777736 -j ACCEPT
iptables -A FORWARD -d 192.168.0.0/24 -i eno16777736 -j ACCEPT
iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o eno16777736 -j MASQUERADE
service iptables save

启动和查看服务：

systemctl start pptpd
systemctl enable pptpd
systemctl status pptpd

6.查看pptpd服务进程和端口：

#ps -ef | grep pptpd
root   25100   1 0 14:19 ?    00:00:00 /usr/sbin/pptpd -f
root   25463 24275 0 14:52 pts/0  00:00:00 grep --color=auto pptpd
# netstat -nutap | grep pptpd
tcp    0   0 0.0.0.0:1723      0.0.0.0:*        LISTEN   25100/pptpd 

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