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SBS 2008 VPN

Posted on 2013-01-21
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Last Modified: 2013-02-10
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
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Question by:grovenetsupport
8 Comments
 
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Expert Comment

by:Gary Coltharp
ID: 38802578
Have you tried connecting to the vpn from inside the network to eliminate the firewall as the culprit?
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Author Comment

by:grovenetsupport
ID: 38802596
No didnt think of that will try
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LVL 56

Expert Comment

by:Cliff Galiher
ID: 38802689
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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Author Comment

by:grovenetsupport
ID: 38802700
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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LVL 77

Expert Comment

by:Rob Williams
ID: 38803665
>>"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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LVL 22

Expert Comment

by:David Atkin
ID: 38805095
Port forwarded 1723 (PPTP)?

Can you telnet the port externally and does it answer?
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Accepted Solution

by:
grovenetsupport earned 0 total points
ID: 38857109
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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Author Closing Comment

by:grovenetsupport
ID: 38872809
Fault cleared thanks for the support
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