How to setup the device in Pass Through mode?

Connect the WAN port of your Firewall which has a public static IP address to any LAN port of the BBNA and then plug in the WAN modem which goes into your Firewall directly into the WAN1 of BBNA. Once that is done, go to the web interface of the BBNA, select “Pass Through” in the drop down menu for WAN1 and update the Firewall IP address, Gateway, Netmask and DNS fields with exactly what used to configure your Firewall’s static IP address.