Dunno if you are still watching this post.

I have a few comment to your post and the other panic about security.

1. Using nextcloud only for bookmarks if total over kill, but if you want to start and understand and later use it more, it’s actually a good idea.

2. Yes, exposing ports in your firewall is potentially dangerous, BUT if you only expose a port and not the complete PC the firewall deals with attacks (but your services still have to be up to date to ensure safety).

3. Yes, using a VPN instead of exposing the service is saver that’s for sure. You can do it they way for the start. But don’t let you be frightened by some of the other commands. I have several services public on my network. 3.1. BUT I still evaluate if this service even have to be public and the risk of late patches. I have public services and local service (name.domain.com and name.local.domain.com). Any service that I don’t need to access from a random PC/share with family/friends can only be accessed in local network /via vpn.

4. Its good you are careful, try to search online for more information since this post didn’t get a lot of comments.

Edit: 5. Don’t know why people recommend tailscale where you need an account, instead of recommendatinh wireguard (tailscale is build on wirequard) or OpenVPN.

Edit 2: 6. Don’t use UPnP! It enables your machines to automatically open ports, that’s so bad.

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Fossify is not even in the play store. I searched for it online and found the GitHub repo, it’s only available via f-droid and IzzyOnAndroid, so yeah, you can’t find it in the Google play store.

That you very much for the answer.

Can I ask why you are doing your firewall virtualized? I never understood why people do it, for me using bare metal has more advanced.

While the name helps people recognize the app, does it strongly suggest its form the same developer (that’s what I thought) so a name change is imho appropriate.