Hi
We have had a VPN solution in place for many years. We have a Windows Server 2012 Standard edition member server on our domain with NPS/RRAS setup on it. Routing and remote access has always worked fine. There is just one NPS policy which is setup to allow connections and authentication is determined on whether the connecting user account is a member of a 'VPN' security group. Our office router, a Draytek 2830 acts as the gateway and is configured to forward the relevant VPN port traffic to the NPS server. The Draytek uses port forwarding for a variety of things (IMAP, SMPT etc), and these continue to work fine.
Late on Friday, one of our remote staff rang up and said she could not connect via VPN from her Windows 7 Professional laptop. When she tried to connect she said that error 718 was displayed stating the remote computer did not respond in a timely manner. Today, I have tried connecting from home and I am seeing the same error on my Windows 8.1 Pro desktop.
I made some configuration changes to the Draytek router in our office last week and had configured it to accept a LAN to LAN VPN connection from a remote Draytek router. This is configured between the routers themselves - additional configuration of our Windows server is not required.
Please note that the LAN to LAN VPN connection has not yet been tested as the remote Draytek router is not in place. Configuration of our office router (the receiving router) is straight forward - you configure a 'profile' (which you select from a numbered list), to accept incoming VPN connections, and the profile can be 'on' or 'off'. Today, after I received the 718 error I turned this profile off and rebooted the router but am still seeing the same error. Also, please be aware that I had configured this router to accept incoming VPN connections from a remote Draytek in the middle of the week and that remote staff were still able to create 'traditional VPN' connections without any problems.
I have a backup of the configuration of our office Draytek before I made the changes but cannot apply it until I return to work tomorrow. However, I am not convinced this is the cause of the problem so if anyone has any experience with error 718 while trying to establish a VPN connection I would be extremely grateful if you could share any tips I might use to troubleshoot it.
Many thanks.