To install in Ubuntu 16.04, run
apt-get install pptpd
Now edit /etc/pptpd.conf
vi /etc/pptpd.conf
Add to end of the file.
localip 10.0.0.1 remoteip 10.0.0.100-200
Next you need to create users, this can be done by editing file
vi /etc/ppp/chap-secrets
I created a user with username = “hostonnet” and password = “tpmH7xADcb@zKH”
root@ip-172-31-0-74:~# cat /etc/ppp/chap-secrets # Secrets for authentication using CHAP # client server secret IP addresses hostonnet pptpd tpmH7xADcb@zKH * root@ip-172-31-0-74:~#
Last column, IP addresses, i put * to allow connection from ANY IP address.
To configure DNS Servers, edit /etc/ppp/pptpd-options
vi /etc/ppp/pptpd-options
Add
ms-dns 8.8.8.8 ms-dns 8.8.4.4
Restart pptpd server
service pptpd restart
Verify it is working with
root@ip-172-31-0-74:~# netstat -an | grep LISTEN | grep 1723 tcp 0 0 0.0.0.0:1723 0.0.0.0:* LISTEN root@ip-172-31-0-74:~#
Enable IP Forwarding
vi /etc/sysctl.conf
add
net.ipv4.ip_forward = 1
Reload sysconfig
sysctl -p
root@ip-172-31-0-74:~# sysctl -p net.ipv4.ip_forward = 1 root@ip-172-31-0-74:~# sysctl -a | grep net.ipv4.ip_forward net.ipv4.ip_forward = 1 net.ipv4.ip_forward_use_pmtu = 0 sysctl: reading key "net.ipv6.conf.all.stable_secret" sysctl: reading key "net.ipv6.conf.default.stable_secret" sysctl: reading key "net.ipv6.conf.eth0.stable_secret" sysctl: reading key "net.ipv6.conf.lo.stable_secret" root@ip-172-31-0-74:~#
Enable MASQUERADE
Run
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE && iptables-save
Useful Links
https://wiki.archlinux.org/index.php/PPTP_server
Connecting to VPN from Ubuntu Desktop PC
To use PPTPD vpn, on ubuntu, Go to Network > VPN Connections > Configure VPN
Here is my configuration
In the configuration, Use Point-to-Point encryption (MPPE) is important. Everything else is default options. With out this you get login fail error. pptpd server log to /var/log/syslog.
