[ubuntu] Possible to reverse proxy a 2nd box on port 80/443 for non-web related tasks?

Hello friends. I'm curious about something. I currently have a web server and a NAS. The web server has ports 80 and 443 forwarded through my router. It also runs DDNS, so I have a domain name tied to my LAN. The NAS also acts as an NVR ruing video surveillance software. At the moment, I'm testing out (and really liking) Bluecherry. Bluecherry is a Linux server based NVR program that has a cross platform (Win/Mac/Lin) client. By default, the client talks over port 7001.

I know I can set up a reverse proxy to forward users who visit a certain URL to my NAS box, as in, say my domain is mydomain.org and I'm hosting a folder called /share on the NAS. I know how to reverse proxy it so mydomain.org/anythingbesidesSHAREhere stays on the web server, yet mydomain.org/share forwards to the NAS.

But I'm not sure how I can (I can't even see how this is possible) to forward specific traffic (specifically my systems using the Bluecherry client which listen on a certain port, not an Apache sub folder) over to the NAS.

Assuming my domain is simply mydomain.org, is there any possible way I can simulate/create/whatever a path called mydomain.org/bluecherry, and when that gets accessed, my web server basically forwards that 80/443 request to the Bluecherry client requesting access from outside my LAN?

Given the Bluecherry client is not a web application that I can host on Apache, I'm very doubtful. But I figured I'd ask. Thanks for any insight!