Firewall Port Forwarding Rule Not Working

[moonpunk]

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): -

[Dainius]

Hi,

1. Traffic rule is not necessary because port forward already “opens port”. Although it should not break stuff.
2. How did you confirmed that port forward rule does not work? Did you just saw that service does not work or you actually checked that you do not get packets with tcp dump or ncat?

[moonpunk]

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.

[moonpunk]

Please can anyone help with this - it’s driving me nuts!