Possible to open ports through USB Tether?

[RoLeLu]

Hello,

So, I'm using a Telkom Prepaid SIM (unrestricted apn) in an Android phone, which is providing Internet to my pc through USB tethered connection.

I wanted to know which ports, if any, on Telkom unrestricted APN are open so that I could use them for the purpose of gaming.

Right now I'm on a virtual LAN (RadminVPN) with some other guys from Eastern Europe and my connection to them isn't great, probably because its being relayed instead of Directing connect, anybody know how to fix that problem?

If i'm mistaken here please direct me upon the path. I really just want to know if Telkom unrestricted apn will remain unrestricted even if I'm using internet on PC through Android USB tethered connection.

If anyone can help I'd greatly appreciate it, thanks.

 

[RoLeLu]

Isn't it possible to use an app like FWD Port Foward to forward the ports for me from my android device? The app in question:

GitHub - elixsr/FwdPortForwardingApp: Port Forwarding App for Android

Port Forwarding App for Android. Contribute to elixsr/FwdPortForwardingApp development by creating an account on GitHub.

github.com

Just found this app the other day, it says it allows port forwarding from your android device. I just dont know how to use it as I'm a complete newbie when it comes to this stuff. If anyone knows how to use this app some help would be appreciated.