I was having almost the exact problem description found at http://www.experts-exchange.com/Hardware/Networking_Hardware/Firewalls/Q_22422525.html?sfQueryTermInfo=1+cisco+client+sonicwal+vpn
Unchecking the transparent tunneling box on the Cisco VPN client solves the connection part of the problem and ipconfig shows an address on the remote network for the Cisco VPN adapter once connected. However, that is as far as I can get. None of the remote network resources are available once connected. I am not a network expert by any stretch, but here is what I have been able to determine so far:
1) I can log into this PC remotely via LogMeIn.
2) When running an ipconfig on the remote PC, the default gateway on the NIC is the address of a SonicWall device on the network that the PC is a part of.
3) The internet access for the remote PC is provided by Comcast.
4) The VPN client does establish a connection to the remote network and provides a valid IP address for the remote network on the VPN adapter.
5) Where I think the problem may lie is that the IP addresses of the NIC and the VPN adapter when connected are 10.x.x.x. The NIC is on a 10.10 subnet and the VPN adapter connects to a 10.2 subnet.
Am I at least on the right track in trying to solve this problem?