I have followed this link  to setup my VPN on Windows 2003 box

On router I have forward port 1723 to server internal IP address.

From windows 7 client I have setup a VPN connection point to external IP of my router.
The connection fails with error 800.

I have disabled the third party firewall I have on the server but the problem persists.

Suggestions please?

Rodrigo CarrilhoAsked:
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when you start the VPN connection are you inside the network or out.  If you are inside, some routers do not allow loop back. Also for right now, I would not bother with the L2TP.  Let's just try to get PPTP working.  What kind of router do you have?

The router also has to enable GRE as well.

Rodrigo CarrilhoAuthor Commented:
I am outside the network, sorry forgot to mention it.

The router is BT home hub 5.
Been doing a little research.  It seems like these modems have issues.  Is it possible to put into bridge modem and use it  as modem and buy a router like dir-655.  I used that in my network no issues.

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Lee W, MVPTechnology and Business Process AdvisorCommented:
Your router must also support GRE Protocol 47 - reference: (and it must be enabled).  I would suggest you check out for instructions on your particular router and to see if there are any notes about it supporting PPTP based VPNs.  Unless it specifically states one way or the other, you can't be certain, short of contacting the manufacturer support and / or possibly searching Google.

Some home class routers do not.
first you may verify it works on the LAN. it will be very useful for troubleshooting. if it works you may have port forwarding issues. usually routers support this. some routers should check the tick VPN pass through.
Rodrigo CarrilhoAuthor Commented:
Sorry for the delay but I was replacing the router.

I now have Draytek 2860, I have opened port 1723 on router to local server.

From outside the network I can establish a connection using a OSX.  I can ping the server and access windows shares, however I have no internet connection whilst VPN is active.
if is simple. go to dialup vpn connection advanced ip settings & uncheck use default gateway on remote network. disconnect & reconnect vpn.

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Windows Server 2003

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