Netgear CG3000DCR as Modem Only Bridge Mode

Hello John,

I'm wondering if you could help me with the

Netgear CG3000DCR as Modem Only / Bridge Mode 

 so I can do port forwarding 

Connection from Netgear CG3000DCR to new wireless router Netgear 6200 with port forwarding. I called tech support and seem no luck with good answer.

Thanks and please help.

Sam Le