A friend of mine just called me with an interesting wireless network problem he is about to have and asked for possible solutions. Currently, he's running a wireless Applenet network at home with an Airport Express as his wireless router, which connects to the cable modem. He runs WPA and he is the only user so his network is pretty much secure. He has several computers on the network which talk together plus he often goes out to the internet.
The problem is that he's about to get a roommate who also wants to get out to the internet. This is OK, but he needs to be able to hide his computers and traffic from the new user. Simple enough, eh?
Normally I would solve this by having two subnets in the house and put his computers on one subnet and the roommate's on another and set the protections appropriately. However, I have no idea if the Apple Express or other home routers support having multiple subnets. Could somebody with more Apple (almost everybody) and more home networking experience please suggest a solution to this problem.
TIA for your suggestions. I wonder it it will come down to having two internet connections and two separate wireless routers using different frequencies.