I need to setup a VPN (PPTP) from my Win2K box (net A) to another network (net B). The problem is that the Win box is behind a very "strict" firewall in which I do not have access. I have tested the target network from a different machine (net C) and VPN is established fine, so there's no question regarding this end.
From the log files of the router on (net B), it seems that the firewall on (net A) is blocking GRE, as everything else is correctly received on (net A). Is there any work around for this? Is there a way to tunnel PPTP through another protocol?