CentOS 6.10 架設 pptp VPN server 簡易筆記

# wget http://poptop.sourceforge.net/yum/stable/rhel6/x86_64/pptpd-1.4.0-1.el6.x86_64.rpm
# rpm -ivh pptpd-1.4.0-1.el6.x86_64.rpm
# vi /etc/sysctl.conf

 net.ipv4.ip_forward = 1

# vi /etc/pptpd.conf

connections 10
localip 192.168.249.1
remoteip 192.168.249.10-19

# vi /etc/ppp/options.pptpd

ms-dns 168.95.1.1

# vi /etc/ppp/chap-secrets

Your_User_Name pptpd Your_PassWord *

# 修改 iptables 設定

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 192.168.239.0/24 -j MASQUERADE

# 重啟 iptables
# service pptpd restart
# sysctl -p

最後記得開啟防火牆(校外→校內) 47 及 1723 這 2 個 port 。