Help with PPTP VPN connection keeps failing

[Eric B.]

On 04/17/2011 09:52 PM, Matt Domsch wrote:
> On Tue, Apr 12, 2011 at 10:21:17PM -0400, Eric B. wrote:
>> Hi,
>>
>> I just recently freshly installed FC14 on my laptop, and have been
>> trying to get a PPTP VPN connection working, but am having significant
>> difficulty.
>>
>> I've properly configured the VPN settings, and see the connection
>> succeeds, but then shuts right back down.  If I try the same credentials
>> from within a Windows machine, it connects without fail.
>
> [snip]
>
>
>> Apr 12 22:11:55 eric-laptop pppd[3520]: LCP terminated by peer
>
> That's the magic message.  You need to enable further debugging to
> figure out why it threw that.
>
> http://pptpclient.sourceforge.net/howto-diagnosis.phtml#lcp_term_authentication


Thanks for the reference.  Right now I am struggling to understand how 
Fedora's Network Manager calls the pptp tunnel so I can enable 
additional logging.  I did find this reference 
(http://live.gnome.org/NetworkManager/Debugging), but the output log 
that is produced doesn't seem to help me pinpoint the issue.  Can you 
see anything of value in it?

Thanks,

Eric

** Message: <info>  pppd started with pid 3591

Plugin /usr/lib/pppd/2.4.5/nm-pptp-pppd-plugin.so loaded.
** Message: nm-pptp-ppp-plugin: (plugin_init): initializing
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 3 / phase 
'serial connection'
Using interface ppp0
Connect: ppp0 <--> /dev/pts/1
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 
'establish'
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 6 / phase 
'authenticate'
** Message: nm-pptp-ppp-plugin: (get_credentials): passwd-hook, 
requesting credentials...
** Message: nm-pptp-ppp-plugin: (get_credentials): got credentials from 
NetworkManager-pptp
CHAP authentication succeeded
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 8 / phase 'network'
local  IP address 192.168.252.224
remote IP address 208.88.112.210
primary   DNS address 192.168.254.1
secondary DNS address 208..222.222
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 9 / phase 'running'
** Message: nm-pptp-ppp-plugin: (nm_ip_up): ip-up event
** Message: nm-pptp-ppp-plugin: (nm_ip_up): sending Ip4Config to 
NetworkManager-pptp...
** Message: <info>  PPTP service (IP Config Get) reply received.

CCP terminated by peer
Compression disabled by peer.
LCP terminated by peer
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 8 / phase 'network'
Connect time 0.0 minutes.
Sent 18 bytes, received 8 bytes.
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 
'establish'
Modem hangup
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 11 / phase 
'disconnect'
Connection terminated.
** Message: <info>  Terminated ppp daemon with PID 3591.

** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 1 / phase 'dead'
Terminating on signal 15
** Message: nm-pptp-ppp-plugin: (nm_exit_notify): cleaning up

** (process:3589): WARNING **: <WARN>  pppd_watch_cb(): pppd exited with 
error code 5