Hi there
Agree with nolio. I'm using VPN also.
Just bought orange pi (budget was tight, less than 20 euro
). Hassle free software used on orange pi - DietPi (dietpi.com/).
Just burn dietpi image ,install Open VPN. Generate certificates for all clients you need and there you go,
you have access to you home network from anywhere
Once you connected just use your HG local IP address i.eg 192.168.1.100
Good luck.