I have an application runs on port 8080.
Ex: 192.168.1.10:8080/Index.html.

This landing page has basic username and password authentication to access it. After login, it changes the port automatically to 8088.
Ex: 192.168.1.10:8088/#/monitor.

I need external users to access this application using only port 80 and Nginx to rewrite between both ports.
Ex. app.domain.com

How can I configure this. please advice.

Regards
Janaka