Ubuntu pptpd 搭建自动化shell脚本

#!/bin/bash
## pptp.sh is writed by Mislost.
## Auto install and config pptpd vpn server

## Update system and install pptp
sudo apt-get -y update
sudo apt-get -y install ppp pptpd

## get ip and remoteip
PRIVATE_IP=`ifconfig eth0 | grep "inet addr:" | sed -n "s/.*inet addr:\(.*\)  B.*/
          
#!/bin/bash
## pptp.sh is writed by Mislost.
## Auto install and config pptpd vpn server

## Update system and install pptp
sudo apt-get -y update
sudo apt-get -y install ppp pptpd

## get ip and remoteip
PRIVATE_IP=`ifconfig eth0 | grep "inet addr:" | sed -n "s/.*inet addr:\(.*\)  B.*/\1/p"`
SUBNET=`echo ${PRIVATE_IP%.*}.10-250`

## config /etc/pptpd.conf
sudo sed -i "s/^localip .*/localip $IP/;s/^remoteip.*/remoteip $SUBNET/" /etc/pptpd.conf

## config /etc/ppp/options
sudo sed -i "s/^ms-dns.*/ms-dns 8.8.8.8/" /etc/ppp/options

## create vpn account
sudo sh -c "echo "test     pptpd   test      *" >> /etc/ppp/chap-secrets"

## config ip_forward
sudo sed -i "s/^\(net.ipv4.ip_forward=\).*/\1=1/" /etc/sysctl.conf
sudo sysctl -p

## iptables forward
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
echo "sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE" >> /etc/rc.local

sudo iptables -A FORWARD -p tcp --syn -s ${PRIVATE_IP%.*}.0/24 -j TCPMSS --set-mss 1356
echo "sudo iptables -A FORWARD -p tcp --syn -s ${PRIVATE_IP%.*}.0/24 -j TCPMSS --set-mss 1356
" >> /etc/rc.local

## restart pptpd service
sudo killall pptpd
sudo service pptpd restart

##
echo "Successful~!"