I have a WRT54GX wireless router, and I am attempting to VPN through it to a Windows 2003 VPN server, but with no luck. I can VPN through to a VPN server running on Windows XP. I can only assume it's the GRE issue, but I cannot seem to find a definite answer to whether or not the WRT54GX supports passing through of GRE packets. I have port forwarding configured. The firewall is off. I even tried putting the server in the DMZ. No luck. I have installed the latest official firmware, 1.00.19. So, my questions: 1. Does this particular router support passthrough of GRE packets? 2. If not, is there a third-party firmware that I can install that works?