I think I make my life difficult. The following I want my grandma to have access to a folder on my physical machine from further away.
I thought I needed a VPN client that first enables a secure way and furthermore I don't know how to proceed. It's all a bit easier locally, but outside there I still lack understanding.
Visually, I just imagined it to be like an AD. That you get a network address practically after booting as soon as where the hard drives are displayed without me being in a domain right?
Otherwise I would need a domain with an AD and would have to add your notebook there too, but I don't think the effort is necessary because there must be other ways. Yes, everything that has to do with uploads. My grandma is not exactly the youngest now and she already has enormous problems when it comes to surfing.
All you need is a shared area on the internet, you can do that with dropbox