Hello, I'm trying to do some sort of access control on my wi-fi with airport express, but I think that for that I will need a server probably, as it may not be possible to do it with just a router. But anyway. I'm going to have a new house share mate who is going to use my internet connection. And what I want to do is basically limit his internet usage, as I've got virgin connection and it has it's own limitations which I don't want to get into because of him using too much bandwidth or speed. So is there any way to limit the amount of data he can download or limit his speed? It's possible to control when he can use the internet and so on but is it possible to limit these things?