Well, if you want to have a secure connection to your dockstar or even your home net, this post describes all steps you have to take to get this done. In my setup I have a dd-wrt router connected to the internet and forwarding all needed ports to the dockstar. You probably don't use a firewall on the debian machine, but you will have to, because we need package forwarding to reach the home net through the VPN tunnel. I assume you don't use your dockstar as the default gateway for your LAN, so you will need an additional route in the router:
Let me explain the path of the packages of a ping from a remote machine to a host in the LAN. For the different subnets refer to the exhibit (VPN: 10.8.0.0/24; LAN: 192.168.0.0/24).