Gateway Webserver on 2 Ports

Is it possible to have the gateway listen on multiple ports, without using a proxy/reverse proxy? E.g. listen on both 8043 and 443.

Reasoning is that I would like to change the gateway ports to the default 443, for cosmetic and convenience reasons and I want to buy some time while reconfiguring all the permanent clients in the field. For a period I would like to have the gateway respond to the old 8043 and the new 443.

Reason I don't to use a proxy is that I don't have one currently and don't want to set one up unless absolutely required.

Pretty sure you will do this. HAproxy and nginx are free.

If this is in Windows, I played with one named Zoraxy that worked really well.

Thanks, I'll speak to IT to get this done