How To Debug and Fix PPTP/VPN Client Connection

Check your settings with it.

VPN connection in Ubuntu

Go to network manager > VPN Connection > Configure VPN > Add VPN

1. Name VPN Connection ( Any Name )

2. Gateway : You ip address of pptp server Or FDDN ( Fully Qualified Domain Name )

3. User Name

4. Password

5. Click on Advanced

Click on " Use point to point encryption " Click OK & Save

Now open terminal

 tail -f /var/log/syslog

And just connect to VPN & check your logs.

There is a typographical failure:

[...]'couldn't convert PPTP VPN gateway IP address '209.6.3.281' (0)'[...]

This IP can't exist cause the last number 281 is greater than 255.

The instructions provided at Debugging NetworkManager pptp look like a good option for debugging VPN connections configured using NetworkManager:

1. in a root terminal, run:

   killall -TERM nm-pptp-service

   /usr/libexec/nm-pptp-service --debug # This is one potential path, OR

   /usr/lib/NetworkManager/nm-pptp-service --debug # Ubuntu 14.04 LTS

2. start your VPN connection

3. reproduce the problem