Resolved FaceTime will not connect on my network

Trying to get my iPad and computer Facetime to work on my network. Basically, I know it works because it works outside my network on other networks, but here, it does not work. When I call my friend, he will get the call, and clicks answer, but when after clicking answer, it just gets stuck on "Connecting." When he tires calling me, I don't even get the call.

What i've tried:
Opened all the ports Apple recommends opening.
Reset iPad network settings
Turned off all security settings on router

What else can I try? This is so silly.

SOLVED! After hours of research, I came across this tiny tiny forum with a bunch of folks who figured it out.

On the iPad (or iPhone) go to Settings<Wi-fi<slect the blue arrow next to your connected network>then change the DNS to 8.8.8.8

It worked! And finally all my push notifications worked too.