Hi. Got a strange problem. We have this hardware CCTV camera box. It controls a few surveillance cameras. You view the cameras via your web browser on port 6000 for example http://192.168.1.1:6000
Now this works fine on the local network but we want to access it from outside. No problem I thought. I'll just port forward port 6000 to the internal address. I've done plenty of port forwarding in my time so I know what I'm doing but in this case we just can't get anything - no initial login or anything. Now I tried forwarding that port to our NAS drive which has a web interface & it works fine. Other services work fine too but for some reason I can't seem to get traffic to flow from outside to this particular device. I tried enabling both TCP & UDP with no luck. The camera box is a fixed IP.
I don't know what more I can do to troubleshoot. The modem/router is a Billion BIPAC 7800N.