Hi There

I am not a networking novice but this is the first public Wifi I Have Done
Basically i have the AP900 and would like it to transmit a public SSID that is open that anyone can connect to
That bit was easy but i need this to be private so the rest of the computers on this network are safe from people sat in the Cafe using this free public wifi
I believe it is something to do with VLAN but never done it before
Any assistance would be greatly appreciated
Kind Regards

Olly