
A virtual private network (VPN) is network that extends a private network (i.e. LAN) across a public network, such as the Internet. It enables a communications between computers and devices across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. Basically, if two computers are connected through a VPN, they can communicate directly the same way as if they were in local network. Although the two computers could be physically very distant, the other computers on the internet are not able to intercept their communication.
First install pptpd
yum install ppp iptables nano cd /usr/local/src #For 64bit OS wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.4.0-1.el6.x86_64.rpm rpm -Uhvpptpd-1.4.0-1.el6.x86_64.rpm #For 32bit os wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.4.0-1.el6.i686.rpm rmp -Uhv pptpd-1.4.0-1.el6.i686.rpm
Setup pptpd
Edit IP setttings in /etc/pptpd.conf:
#nano /etc/pptpd.conf localip 192.168.0.1 # your VPS/Dedicated Server IP address remoteip 192.168.0.101-200
And the following settings to /etc/ppp/options.pptpd:
ms-dns 8.8.8.8 ms-dns 4.4.4.4
Create user to access the VPN server
Add user account in/etc/ppp/chap-secrets (assign username and password):
#nano /etc/ppp/chap-secrets vpn pptpd vpnpassword *
Enable network forwarding in /etc/sysctl.conf
#nano /etc/sysctl.conf net.ipv4.ip_forward = 1 #To make the changes to sysctl.conf take effect, use the following command. sysctl -p
Setup iptables
You need to add the following iptables rules in order to open the correct ports and properly forward the data packets:
iptables -A INPUT -i eth0 -p tcp --dport 1723 -j ACCEPT iptables -A INPUT -i eth0 -p gre -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
Start PPTP VPN server
service pptpd restart chkconfig pptpd on
Congratulation’s! You have successfully installed PPTP VPN
yongki
2018 Dec 16, 17:12:49
I followed PPTP install tutorial but at the time enter the nano command /etc/sysctl.conf no text that appears like this is net.ipv4.ip_forward=1 as in centos 6. please help
ali
2020 Mar 05, 15:03:59
show error : [root@static src]# rpm -Uhvpptpd-1.4.0-1.el6.x86_64.rpm rpm: -Uhvpptpd-1.4.0-1.el6.x86_64.rpm: unknown option