Best way to install behind router

[kurgans]

You put this post as I installed my system, if not entirely correct but it works in my local network without problems.

You should not use the ip external your router only the private ip you have allocated your DHCP system, then opens port 80, 21, 53 ... etc ip to have in the pc where you've installed the panel (192.168.1.34) for example.

If you use a dynamic ip dyndns or non-ip for access anytime to your panel.
To access the panel used the example 192.168.1.33 internal ip is mine and all the necessary ports on my router are open to that ip.

A greeting