Does anyone know if any of Apple's Airport products have strict/customisable firewalls (do I need another hardware firewall as a backbone) or support WPA2? I'm installing a wireless network that needs to be very secure. I've learned that the WEP standard has various problems and I don't see it as an option. The Airport Express (apparently) supports WPA, but is this only the first incarnation? If not then what brands would you people recommend? I need a router that supports all OS's. Mac OS X, BSD (all Unix variants) and Windows and I could use some opinions.