Setup PPTP VPN Server on CentOS 6

This guide explains how to setup your own PPTP VPN on CentOS 6 by using the pptpd daemon available in the yum repository.

Please note that security vulnerabilities have been found in the PPTP protocol and it may be worth evaluating other VPN protocols before utilizing PPTP.

Setup VPN server

Install the required packages.

yum install -y pptpd

Configure the PPTP settings. The “ppp” configuration files are important for pptpd. First, configure /etc/ppp/options.pptpd, as follows. If desired, you may change the DNS servers.

name pptpdrefuse-paprefuse-chaprefuse-mschaprequire-mschap-v2require-mppe-128proxyarplocknobsdcomp novjnovjccompnologfdms-dns 8.8.8.8ms-dns 8.8.4.4

Next, add users to the PPTP VPN service by editing /etc/ppp/chap-secrets. Change the username and passwords accordingly.

vultr1  pptpd   P@$$w0rd  *vultr2  pptpd   P@$$w0rd2  *

Configure the pptpd daemon settings by editing /etc/pptpd.conf. Use the following example configuration. You can change the IP address ranges if needed.

option /etc/ppp/options.pptpdlogwtmplocalip 192.168.80.1remoteip 192.168.80.101-200

Next, edit /etc/sysctl.conf to enable IP forwarding.

sed -i 's/^net.ipv4.ip_forward.*/net.ipv4.ip_forward = 1/g' /etc/sysctl.confsysctl -p

Configure routing with iptables.

iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 1723 -j ACCEPTiptables -t nat -A POSTROUTING -o eth0 -s 192.168.80.0/24 -j MASQUERADEservice iptables saveservice iptables start

Start the service.

service pptpd start

Your PPTP server setup is complete. Now you can connect to your own PPTP VPN server from your PC or mobile device.

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