I have two Port Forwarding Rules - one of them works perfectly, the other does not??
Here is the one that works perfectly (first image is Traffic Rule, second image is Port Forwarding Rule): -
Now here is the rule that doesn’t work (again first image is Traffic Rule, second image is Port Forwarding Rule): -
I’ve just tried it - haven’t done any sort of traffic analysis (don’t really know how). All I know is that Port 8123 forwards to the server no problem, but port 33899 doesn’t. There is one thing worth noting though - it does port forward locally, it just doesn’t from external.
I have checked to ensure that the ISP is not blocking the port and they’re most definitely not - I’m using the same ISP in another scenario and it works fine. Only difference between the setups is that I am using a Teltonika OTD500 in this one.