What are closed networks?

A closed network is like a secret club where only certain people can join and talk to each other.

Imagine you’re playing a game with your friends in the backyard, but there’s a fence around it. No one from outside can come in, and no one inside can leave. That's what a closed network feels like, it's a group of computers or devices that only communicate with each other, not with anything outside.

In a closed network, every device knows who is allowed to talk to them. Like how your teacher lets only the kids in your class pass notes during lunch. No one from another class can join in, it keeps things simple and safe.

Sometimes, people use closed networks so that only specific devices can connect. For example, a school might have its own network for students and teachers, but no one from the library can join in. It's like having your own special playground, you know who’s allowed to play with you!