Using Ethernet devices in a WAN
The Connect EZ 2 device has
By default, the WAN/ETH1 Ethernet device is configured as a WAN, named ETH1, with both DHCP and NAT enabled and using the External firewall zone. This means you should be able to connect to the Internet by connecting the WAN/ETH1 Ethernet port to another device that already has an internet connection.
The ETH2 device is configured as a LAN interface, named ETH2, which uses the Internal firewall zone.