I can connect to our LAN through a Checkpoint VPN client but I can't attach the PC to the domain. The VPN server is located at a data center where I have no control. It also appears that I can't change settings on the Checkpoint client. Our domain controllers are located at our corporate office and they are connected to the third party data center via a dedicated T-1 (the data center is where the VPN is handled.) I can RDP into the DC using the local IP once connected through the VPN.