I am using Checkpoint 4.1 and I am trying to setup a PPTP VPN server using Win 2000. I have opened up the proper ports as well as the GRE IP protocol 47 in the firewall. For some reason though, I will connect to the server and the client will attempt to login, but I get an error 721 on the win 2000 vpn client. I have read where this error can indicate that GRE traffic is not getting through, but I used the PPTP test tool that is on the Win2000 server CD and it says that GRE traffic is getting through. Any ideas? I am using a Static NATted Win 2000 server, and a win 2000 pro client.
Thanks,
Ryan
