EX3301-T0 Unable to Access Internal Services from External Source

Monstar316

Hi,

I've just had fibre broadband installed with a Zyxel EX3301-T0 router installed.

How do you go about allowing access to certain ports for internal services I have set up from the outside world?

I've had a look at Port Forwarding and setting up Protocols/Rules but I still can't get access to my internal services either via DNS or IP.