what I'm trying to achieve here is to be able to give my student neighbor access to the internet using the wireless side of my DSL router but I wouldn't like to have to setup encryption/privacy in any of my intranet wired XP/Ubuntu based workstations or my NAS
I think this should be easy to setup but the solution has been eluding me for the last two weeks. I tried/intended to use firewall based solutions like ipcop pfsense and a few others but it got too complicated very soon, somehow whenever the router gets the WAP TKIP key (which I provided him along with the SSID name) it automatically lets the user access my wired network and workgroup.
of course, I took all my files offline and cleared the shared folders, but I still want to be able to share without having to disconnect my fileserver . I think two separate networks or some kind of "network splitter" prohibiting the traffic between my computers and the wireless network should do the job . unfortunately, I don't see how to do it in a inexpensive way or spending just a little bit.
yes I know about fonera devices and wrtg54g linux based devices. all I have is a switch , the router and a few pci wireless NICs and a spare computer .