Alternate internal and external Remote Management Port

I have an ERL3 and we all know the management port is HTTPS/ port 443.

I know how to enable WAN access on the same port but that would conflict with our SSL webserver on same wan port.

How can I accomplish the following:

Access to management port from LAN on port 443

*AND*

Access to management port from WAN on port 8443

I cannot figure out how to DNAT port forwarding locally on the router from wan port 8443 to local 192.168.1.1 port 443.

Any help would greatly be appreciated.