Can we setup reverse proxy using RASA server?

I have a unix box running both rasa server at port 5000 and rasa-nlu-trainer at port 5001. When I try to hit the server using fqdn, it defaults to 5000. How should I configure RASA so I can hit both ports?

Workaround: For now, I am passing the IP followed by port to access rasa-nlu-trainer web page.

Kindly suggest. Thanks!