I have setup a RRAS server on my AD machine running WS2008R2. When I set the RRAS to use a static IP pool, I can connect from my VPN just fine (I'm connecting from the built-in VPN client in Windows 7). However, when I change my RRAS to use DHCP and configure DHCP Relay Agent to forward to my D-Link router (10.3.1.1), I get the following error in Windows 7 when I try to connect:
Error 720: A connection to the remote computer could not be established. You might need to change the network settings for this connection.
My goal was to delegate DHCP responsibilities to my router, since I don't want to install a DHCP server on this machine. Anyone have any idea what I can do to remedy this issue? Here is the corresponding error I get in my RRAS event log:
CoId={E0A1A0A2-6B0A-4B9B-B0ED-F0BE44166166}: The user DAILEY\robert connected to port VPN3-19 has been disconnected because no network protocols were successfully negotiated.
Help is greatly appreciated. If you need more information let me know and I will follow up with edits.
You shouldn't need to configure the DHCP relay agent on the RRAS server as the DHCP server on the router is on the same subnet (or should be) as the RRAS server. A DHCP relay agent is only needed when you need DHCP packets to transit a router from one subnet to another subnet. Try again with the DHCP relay agent disabled.
At the very worst you can use a static IP pool like you did previously. There's no technical reason you have to assign DHCP addresses to the VPN clients.