Rouer_man, thanks for your rapid response. As I mentioned, I've not been able to get anything to work at all. The DMZ solution someone else used was for a different / older TP-Link unit. I did try...

Region : UnitedStates Model : TL-ER6120 Hardware Version : V1 Firmware Version : 1.0.7 Build 20140113 Rel.63736 ISP : ATT After spending almost an hour with ATT advanced tech support earlier today,...