first you need to determine what kind of web server you are running.
lets say you are running apache, in that case you will need to enable SSL on the server itself. you can find a lot of howto’s on the web for setting up a SSL webserver.
once the server accepts secure connections, you can go ahead and forward port 443 (standard SSL) to your server.
hope this explaination helps.
I have a similar problem in that inside my network I have an intranet server which I need to expose outside my network. I only want that to happen with SSL https. However the problem is that when I use the Virtual Server section and select port 443 it doesn’t map because the port is used by Zeroshell.
Is there any way to direct traffic directed at a particular internet IP to a particular server? Something like a selective DMZ etc?