What's it called?

[picky33]

I live in a small apartment building, where all the apartments share 1 router. I want to build a server that can connect to this internet with one ethernet port and with another set up my own Lan. right now because we all share one router, we can see everyone's TV's, Alexa/Google Home devices, Sonos, etc. so security wise that is not a good thing. I plan to create my own server with some old pc parts i have (3600, AMD580, etc.) and i want to know what is it that i need to do in order to great a separate Lan where only my devices show on it and they can't see my neighbors, but they can access the internet through my server, which will be running a bunch of stuff. (nas, Home Assist, docker stuff, Plex/Jellyfin, etc.)

 

I think its a VLAN but i think that's a Lan within a Lan for segmenting and I'm not sure if that what i want, and i don't think it's a bridge, because the only bridges I've used are LTE Hotspots and Wifi to Ethernet recievers, but who knows maybe my understanding is all wrong

[Needfuldoer]

You're describing NAT (Network Address Translation). You'd have your own router connected to your building's network, which then puts together its own subnet for your own devices. This can get fiddly if you want to do more involved configurations like port forwarding, but what you're looking to do is certainly feasible. (That's what everyone's' routers do, you're just implementing it on a smaller scale.)

 

VLANs are a way to virtually chop a network up into smaller pieces. You'll see that implemented in datacenters and businesses, that's outside the scope of what you need to worry about.

[Bad5ector]

1 hour ago, Needfuldoer said:

This can get fiddly if you want to do more involved configurations like port forwarding

I find double NAT'ing also causes problems with multiplayer.