LAN can see IP's on WAN side

Hi,

I'm new to Edgemax Routers and need a little help.

I'm trying to setup a Edge Router lite inside a network to seperate an office with a different subnet.

I've configured Eth0 as static WAN with 192.168.0.9/24

Eth1 LAN 192.168.10.1\24 using the Wizard.

All working fine BUT I can ping IP's in the WAN side from the LAN side.

How do I block everything besides the internet for 192.168.10.0

Michael