I have split my Lan into a number of segments. Lan2 on the router has it's own DHCP server (provided by the router) and uses google's DNS servers etc - because this is connected to a free open WiFi hotspot.

Users on this segment can't browse any of my other Lans.

Is it possible to prevent users on this Lan from accessing the Router config (and telnet etc) pages?

I am using a Draytek 2920

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