Cisco DSLAM - Port Forwarding help

Hey there.

Has anyone here actually managed to get port forwarding working on this modem?
No matter what I try—static vs. dynamic IP, setting up DDNS, opening the DMZ, or disabling the firewall—nothing sticks. It’s just not happening, and
I need this fixed so I can view my IP camera feeds from outside my home network.

Here is a shot of my current port forwarding setup: http://tinypic.com/r/2qmp1si/9

I’ve forwarded both the HTTP and media ports for the cameras, but it's useless since
the port checker keeps reporting them as closed. 🙂🙂

edit: running Windows 10, I've disabled Windows Defender via the registry and turned off the firewall entirely. The camera model is Generic Hardware Model and my ISP is AT&T.

I actually had quite a bit of success setting this up myself, though it really just comes down to assigning a static IP address on your computer first, then plugging that right in along with the specific port you need. I'm not entirely sure which ones you're looking for—whether it's TCP or UDP—but that should get you moving. To be honest, my old router was a total headache to deal with; I used to run into all sorts of glitches trying to assign IP addresses to different devices, where some would pick them up without any trouble while others would just flat-out refuse, forcing me to manually set a fixed IP every single time. Thankfully, I finally swapped that thing out for a Speedtest router, and thank God it’s been smooth sailing since.