I could use some help sorting out an issue with Comcast. They just replaced our modem (which was working fine) with a new one (model CGA4131COM). I've copied all of the old settings/forwarded ports and everything works great including remote desktop, except our VPN. Getting the following error:
The VPN connection between your computer and the VPN server could not be completed, The most common cause for this failure is that at least one internet device (for example, a firewall or a router) between your computer and the VPN server is not configured to allow Generic Routing Encapsulation (GRE) protocol packets. If the problem persists, contact your network administrator or Internet Service Provider.
I've tried PPTP (which we were using just fine before the modem switch) and tried setting up L2TP w/ preshared key - no dice. Comcast's only advice was to use bridge mode.
Any ideas?
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