That’s called an intranet (which is like the internet but for a building or small area).
The internet isn’t really anything more than computers connected to other computers. If you want to make your own internet you can connect two computers whether wired or wireless, and voila. You can host a website locally that only those two computers can access.
If you run BGP, yes. Instead, you can always just build up huge-ass fixed routing tables that are impossible to maintain once you get more than a handful of networks…
That’s called an intranet (which is like the internet but for a building or small area).
The internet isn’t really anything more than computers connected to other computers. If you want to make your own internet you can connect two computers whether wired or wireless, and voila. You can host a website locally that only those two computers can access.
See also: !selfhosting@slrpnk.net
You can even set up your own DNS and create your own domain names for said websites.
Don’t you need at least AS numbers and BGP (or equivalent multiple independent networks) for it to be an "inter"net?
If you run BGP, yes. Instead, you can always just build up huge-ass fixed routing tables that are impossible to maintain once you get more than a handful of networks…
Don’t need to, you can start with RIP