I wanted to test and eventually use our router's (PepLink Balance One) build in VPN server to access resources on the network for users.
After setting up the VPN server (in the router the feature is called Remote User Access) I choose L2TP with IPsec.
On the client side I used the Windows 10 built in VPN Connection option and after a few tweakings I succeeded in connecting to the server from an outside network.
The problem is that I could only connect to one share, using the file server's internal IP address 192.168.0.x. Cannot access (or ping) anything by the NetBIOS name.
Next step I changed the protocol to PPTP on the server and managed to connect with the client, however still not able to access resources, except by IP address \\<Internal IP address>\Share.
Just as a side note, we don't have a domain, just peer to peer.