My guess is that you're on shared hosting. They close off these ports on that platform for security reasons. If you'd like to have that port open, you'll need to get a VPS or a Dedicated Server, that way you have complete control of the environment.
* Please note that I offer free advice on this forum. I DO NOT PROVIDE ANSWERS VIA PM. If you would like personalized help, you can see my pricing on my services page. Otherwise, please ask your question in the proper forum so the answer can assist EVERYONE in the community and not just you. Thanks! *