Dual-port server acting as router, but LAN can't see WAN

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http://serverfault.com – Using Windows Server 2012 Essentials. I've got two ethernet ports. One is connected to a router which is connected to the internet. This portion of the network is fine. The router runs DHCP on the 192.168.1.x subnet, and provides a Company1 WiFi for guests, which does not have access to servers etc. The idea is to have a second LAN, through the Windows server. I'm trying to use the .16.x subnet for this, but machines on teh 16.x subnet can't see the internet. Port 1 is set to get settings automatically from the router. Port 2 is configured as so: IP: Subnet: Ga (HowTos)