We have a web application on an intranet server which is only accessible from a LAN. It has no access to internet. We want that internal application only be accessible from the internet but we do not wish to open that server to internet.
We have another server in DMZ that has accessible from both internet and LAN. We want to expose that web application within the LAN to the internet via the server on the DMZ.
In this case, URL redirection possibly won't work, because the web application within LAN does not have a valid URL.
Can we make that web application on the LAN accessible from the internet via the server in DMZ? If yes, how?