SBS 2008 VPN

Hi there, i have an SBS 2008 that wont play with VPN. The VPN properties in the SBS console say Off even though the wizard has been run and finished ok but with a warning it could not configure the router. Ports all open on the router and routing and remote access all working and no errors in the event log. I can remote desktop without a problem and use OWA but the VPN keeps failing. Either lets you on and kicks you off or tells you that your machine doesnt have the right protocols etc.

Using a BT Business Hub
grovenetsupportAsked:
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grovenetsupportConnect With a Mentor Author Commented:
The fault was found to be the phone guys had re connected the old router in the BT versatility system on the same IP etc. Once removed happy days again!
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Gary ColtharpSr. Systems EngineerCommented:
Have you tried connecting to the vpn from inside the network to eliminate the firewall as the culprit?
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grovenetsupportAuthor Commented:
No didnt think of that will try
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Cliff GaliherCommented:
This often happens with the edge device/router either has not been configured or does not support forwarding the GRE protocol.
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grovenetsupportAuthor Commented:
It has GRE setup in the forwarding. I assume the internal worked as I setup the vpn internally and its booted me off logmein
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Rob WilliamsCommented:
>>"It has GRE setup in the forwarding"
How did you "forward" GRE.  GRE (protocol 47, not port 47) is not forwarded but rather enabled.  It is done in different ways on different routers.

 I am not familiar with where this option is located, nor does it sound like a good choice from a security point of view, but from the BT site.
Inbound connections to local VPN server
A VPN server can be hosted on the local network. However, to allow for remote clients to connect to the VPN server, the BT Business Hub firewall must be configured to Allow All Applications to pass through to the VPN server.
http://btbusiness.custhelp.com/app/answers/detail/a_id/10868/~/using-the-bt-business-hub-with-vpn

May we ask why you need a VPN?  In an SBS domain most of the time you do not need a VPN, and there are serious security concerns with enabling VPN's for client use.
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David AtkinIT ProfessionalCommented:
Port forwarded 1723 (PPTP)?

Can you telnet the port externally and does it answer?
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grovenetsupportAuthor Commented:
Fault cleared thanks for the support
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