JHDFC, how is a wireless guest network supposed to work?

[Deadjasper]

As I understand it and as my router states it, a connection to the guest network allows internet access but not LAN access.

Router is an Asus RT- N65R. Computer connected to the guest network has full access to the LAN. I want it to have access to the Internet but not to the LAN.

Is this even possible?

Thanks