I have a TP-Link Router which I wish to use to provide Internet Access to the public on its own LAN. (192.168.0.x). The WAN side of it is connected to the LAN (192.168.4.x) provided by our main Draytek router which in turn is connected to our only broadband enabled telephone cable (ADSL) . This gives anyone connecting to the TP-Link router Internet access but it also seems to allow them access to our corporate 192.168.4.x network which is a serious problem. How can I give members of the public (our clients) access to the Internet with out giving them any access to the 192.168.4.x network. Do I need to configure VLANs on the Draytek. Sorry I'm a bit clueless about this stuff.