I've setup routers/modems before so this is not my first rodeo. I've configured the router properly on the 192.168.1.0/24 network and all of our internal clients can access resources outside the private network. My DynDNS address will successfully ping resulting with the internet IP address assigned

As IT/admin for my company, I've had to deal with this router many times. I have tried to open ports on many occasions - ALL FAILED - whether it's a web server, mail server or security cameras, etc. Now I'm trying to open a Jamulus port on my "busine