Your right, the firewall is there to open and close ports for the different services.
It helps keep your entire groov EPIC device more secure because you are in control of the ports on the firewall. For example, port 502, Modbus is not encrypted, or authenticated, so it could quite rightly be considered a security risk. So for best practices, if you are not using it, close the port to that listening service by using the firewall controls built into groov Manage.
The challenge you face is a little different from the function of a firewall. You want to be able to nominate what port numbers a service is listening on.
So, to use our Modbus example, rather than 502, you want it to listen on port 2202. That’s not what a firewall does, it does not do port forwarding, that’s the function of a router… it just so happens that most routers have firewalls built in and so its easy to get the function of the two devices mixed up a bit.
groov Manage does not allow you to arbitrarily change the port numbers of listening services.
In your case, you want to add a listening service on port 8443 and you want to nominate the service to be groov View.
Another person may want MQTT to listen on port 8443, then what?
I must admit that its a bit ‘odd’ that we have chosen to do it on one product, but not another.
Let me reach out to the right people and see what I can find out.