#!/bin/bash
yum -y update
yum -y install epel-release
yum -y install firewalld net-tools ppp pptpd
# 開啟核心轉發
echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
sysctl -p
#新增pptp的登入賬號密碼，賬號是admin 密碼admin888
echo 'admin * admin888 *' >> /etc/ppp/chap-secrets
#開啟虛擬IP分配
cat >>/etc/pptpd.conf <<END
localip 192.168.2.1
remoteip 192.168.2.10-100
END
#新增 pptp 的DNS解析伺服器 格式：ms-dns 8.8.8.8 ，ip改為你自己的可以了
cat >>/etc/ppp/options.pptpd <<END
# ms-dns 202.12.27.33
ms-dns 8.8.8.8
ms-dns 8.8.4.4
END
# Firewall 通過防火牆規則
ens=$(ls /etc/sysconfig/network-scripts/ | grep 'ifcfg-e.*[0-9]' | cut -d- -f2)
systemctl restart firewalld.service
systemctl enable firewalld.service
firewall-cmd --set-default-zone=public
firewall-cmd --add-interface=m=$ens
firewall-cmd --add-port=1723/tcp --permanent
firewall-cmd --add-masquerade --permanent
firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -i $ens -p gre -j ACCEPT
firewall-cmd --reload
#
cat > /etc/ppp/ip-up.local << END
/sbin/ifconfig $1 mtu 1400
END
chmod +x /etc/ppp/ip-up.local
systemctl restart pptpd.service
systemctl enable pptpd.service