I'm having some difficulties connecting my Android devices to a Windows share over VPN.
Background
I've bought a Synology DS214se NAS, which I have installed in my home network. I have configured the NAS to run a VPN (PPTP) server. The DNS name of the NAS is diskstation, and its IP address is fixed; 192.168.1.13. My Android devices are a smartphone running Android 4.2.2 and a tablet running Android 4.4.2, and I'm using the built-in Android VPN client.
When I'm on my home network, I can acces the Windows shares on my NAS on both my Windows PC and on my Android devices.
When I'm on an external network with my Windows PC, I can connect to the VPN server and then access the shared folders.
The Problem
With my Android devices, I can connect to the VPN server. However, I cannot find the Windows shares. I have tried to connect to smb://192.168.13 or smb://diskstation and 192.168.1.3 or diskstation using the ES File Explorer app.
I haven't been able to come up with a solution myself yet, and I've also searched alot for a solution without luck.
So if you have any ideas that might point me in the right direction, it would be highly appreciated.