Is it possible to disallow external IPs from accessing a page of a React site? [migrated]

I’m currently learning React to host a personal website (on an Ubuntu server) and am port forwarding it to allow access from the internet.
However, for security reasons, I’d like one or more pages to only be accessed on my LAN. If an exter… Continue reading Is it possible to disallow external IPs from accessing a page of a React site? [migrated]