Question

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How To Debug and Fix PPTP/VPN Client Connection

rated 0 times [ 22] [ 0] / answers: 1 / hits: 109364 / 3 Years ago, mon, november 15, 2021, 5:40:27

I am asking a question, which has two sub-questions. Those are how can I get VPN to work on Ubuntu 12.04, either by getting the built-in pptp VPN to work or through manual configuration. Microsoft clients have no trouble creating VPN connections into the same system.

Here are the details:

I am running Ubuntu 12.04

Linux mrshighpants 3.2.0-40-generic-pae 

#64-Ubuntu SMP Mon Mar 25 21:44:41 

UTC 2013 i686 i686 i386 GNU/Linux

For this version of Ubuntu and quite a few releases going back, I can configure VPN using Network Manager, but cannot get it to start. On 12.04, I get the service did not start for an error message.

1) What is the best way to debug this?

2) I would like to enhance this question by providing the necessary logs, but what data should I place in this question, other than tail syslog (shown below)?

3) Is there a way to get VPN configured manually?

Here is tail syslog

tail syslog

May 11 16:27:51 mrshighpants NetworkManager[868]: <info> Starting VPN service 'pptp'...

May 11 16:27:51 mrshighpants NetworkManager[868]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 3552

May 11 16:27:51 mrshighpants NetworkManager[868]: <info> VPN service 'pptp' appeared; activating connections

May 11 16:27:51 mrshighpants NetworkManager[868]: <info> VPN plugin state changed: init (1)

May 11 16:27:51 mrshighpants NetworkManager[868]: <info> VPN plugin state changed: starting (3)

May 11 16:27:51 mrshighpants NetworkManager[868]: <info> VPN connection 'townofsomethington' (Connect) reply received.

May 11 16:27:51 mrshighpants NetworkManager[868]: <warn> VPN connection 'townofsomethington' failed to connect: 'couldn't convert PPTP VPN gateway IP address '123.4.5.281' (0)'.

May 11 16:27:51 mrshighpants NetworkManager[868]: <warn> error disconnecting VPN: Could not process the request because no VPN connection was active.

May 11 16:27:51 mrshighpants NetworkManager[868]: <info> Policy set 'MtLaughmore' (wlan0) as default for IPv4 routing and DNS.

May 11 16:27:56 mrshighpants NetworkManager[868]: <info> VPN service 'pptp' disappeared

After Testing:

There were two problems, and now a successful connection. The IP address was interposed .281, instead of 218, and the password was wrong.