We have a HP ProCurve 420 wireless access point hooked up to our LAN, which then connects to the internet though a gateway router. Is it possible to set up a guest SSID, which can access the internet but not our LAN?
After reading through the manual, I don't see anything put forward as providing this function, but there are enough features to make me think I may have missed the implications of one of them.
The Procurve 420 supports multiple SSIDs, each of which can have different authentication settings and VLAN membership associated with it.
What you want to do is let your regular SSID be part of a VLAN that contains both your LAN and your router, and the guest SSID use a different VLAN that only contains your router.