RoR app: viewing a running app via IP address

[t0by]

Another issue that I've been trying to get an answer to form support.

Have a Ruby on Rails application running on port 12002. The app was set up through the cpanel.

How can I view this app from the outside world? In an ideal world, it would be:

http://my.ip.address : port_number

However, from the cpanel I understand that you need dns in place before doing a rewrite.

i.e.
http://my_domain_name : port_number.

The first response from support was that I could view this running app from:
http://my.ip.address/path/to/app/public

This serves up a static page from the /public directory in the rails app.

I responded to support that this was happening and was correctly told that I was using the wrong address.

Indeed. The wrong address suggested by another support guy.

So, my question. Can a RoR app be viewed from the outside world by IP address? Or not?

[JPC-Anoop]

Ports are not opened in the firewall in our shared/SDX servers, so you can't access it using the http://ip:12002. You have to setup a redirect rule for your application from cpanel >> Ruby on Rails.