Question about Ingress: Where is the entrance?

I have a K8s test setup with 4 nodes and one controlplane in VMs running on a Linux host.
I know where nodeport get allocated on the nodes, but don’t understand where the input of ingress is on these VMs, is in on the controlplane, the host for the VMs?
So basically I can setup the ingress on K8s, but can’t find the entrance, on which object / Host it binds the ingress port.