VPN Server

Tamilarasu P
Tamilarasu P used Ask the Experts™
on
Hi,
 
   I have a VPN server in Windows 7 machine and I was configured Virtual server in Dlink router using VPN server IP address and then configured to client VPN using PPTP protocol.
Now i am trying to connect VPN connection it will be connected within our network.Cannot connect to our network.
What should i do?

I got a error message "between your computer & VPN server is not configured to allow GRE protocol packets.

But i can able to connect my within network.I can't able to connect network from outside network only.
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Distinguished Expert 2018

Commented:
On your router, did you open TCP port 1723? You're also supposed open protocol 47 (GRE), but not all routers will allow you to do this. In many casses, as long as you open 1723, you should be working fine.

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Commented:
Can you pls find this attachment file.
Screenshot_1.png
Distinguished Expert 2018

Commented:
How do you have your VPN server configured right now? More often than not, once I opened that port, it was usually something on the server I needed to tweak to get things working.
Top Expert 2013
Commented:
Usually on a D-link router such as you have, in the virtual server configuration, you can choose PPTP from the drop down list, rather than using port 1723.  Using the PPTP option forwards 1723 and enables GRE pass-through.

For the record, PPTP is probably one of the least secure methods of remote access these days.
Top Expert 2013

Commented:
PS- Looking at the manual there is an "ALG" tab below virtual server where you can enable PPTP pass-through.  This is usually for outgoing connections but I would enable if not already done.

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