How to create a TCP connection to a gray IP over the Internet?

Question

Computer networks

I welcome everyone. The situation is this: there is a PC with a tcp server, there is a gray ip to which it is impossible to connect via the Internet. What can be done to connect, say, from a phone to this PC? Let's say through the same proxy? Paid options like vpn are not considered, because the task is exclusively for personal purposes to send a couple of lines a couple of times a day. Thank you.

Answer 1

As an option, if you want to get confused, install your simple vpn server and connect it to the desired computer to the desired one via PPTP, but this is very unlikely because this protocol is weakly protected and it is unlikely that you can work comfortably on a gray IP, you most likely will not will start up for nat provider.
The simplest solution is a white IP that costs 50-100 rubles a month from the provider and there is no need to dance with a tambourine

Answer 2

Ngrok

Answer 3

What can you do to connect

1. Get a white IP. For money or for a steeper tariff (for example, my provider gives a white IP for free at a certain tariff rate, if necessary)
2. Buy a VPS, set up a VPN there, connect your home computer to it. This is a more complicated option if the provider, for example, does not provide white IPs.

Paid options by vpn type

Usually a VPN is free if you install it yourself :)
It is impossible to connect to a gray IP behind a provider's nat (without actions on the part of the client, and usually these actions are taken because the provider, for example, does not give an IP or even actively opposes it - there are such fucked up ones)

Answer 4

Is it possible to send files between computers without using a server?

ssh ssh-j.com