LB1110 blocking ports ?

When we have this modem in bridge mode connected to a wifi router we can not seem to get access to any ports opened in the router. Worked ok previous to getting the LB1110. Cant see any options in the Modem when in bridge mode.

Ports required are 8000 80 554 and a few others for a NAS.

cant operate the LB1110 in router mode as it then wont talk to the wifi router.