pptp connection from Vista to company fails

[Guest]

Hi everyone!

I just configured a new notebook for connecting to our company by pptp, due
to Vista's lack of supporting our normal VPN client (which uses IPSec). I
tested the onnection with my own PC (which runs XP SP2) and could work with
that quite well. Problem now is this: the Vista machine can connect in 1 of 5
tries, but then it the connection lasts for only seconds or maybe 3 min.
Sometimes I even cannot connect at all. Even a complete reboot of the
notebook helps. On the other hand I don't have any problems, when using a XP
client.
I don't know what to check or do on that incident. Any ideas?

Best regards from Germany,
Sven Butzmann

 

[Robert L [MVP - Networking]]

What's the error code if it doesn't work? And any errors in the VPN host?

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Hi everyone!

I just configured a new notebook for connecting to our company by pptp, due
to Vista's lack of supporting our normal VPN client (which uses IPSec). I
tested the onnection with my own PC (which runs XP SP2) and could work with
that quite well. Problem now is this: the Vista machine can connect in 1 of 5
tries, but then it the connection lasts for only seconds or maybe 3 min.
Sometimes I even cannot connect at all. Even a complete reboot of the
notebook helps. On the other hand I don't have any problems, when using a XP
client.
I don't know what to check or do on that incident. Any ideas?

Best regards from Germany,
Sven Butzmann

 

[Guest]

Hi Robert!

There is no error code. I start the connection and when "verifying user and
password" appears, it takes up to 4 min. and then simply disappear. No
connection established, no problem reported. On the other side is a firewall
(Watchguard X700). I just installed the syslog daemon for the firewall to log
a whole login procedure.

Thanks for answering!

I suspect that the pptp session is not closed correctly. In that case the
vpn profile would be "still in use" when connecting after a successful
connection...

 

[Robert L [MVP - Networking]]

Could be. To test it, re-set the router. Does that fix the problem? please post back with the result.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Hi Robert!

There is no error code. I start the connection and when "verifying user and
password" appears, it takes up to 4 min. and then simply disappear. No
connection established, no problem reported. On the other side is a firewall
(Watchguard X700). I just installed the syslog daemon for the firewall to log
a whole login procedure.

Thanks for answering!

I suspect that the pptp session is not closed correctly. In that case the
vpn profile would be "still in use" when connecting after a successful
connection...