How to make a window for entering a password and login pop up when accessing a domain file ball from a non-domain PC?

Question

Windows Server

Good day everyone!
The situation is as follows:
There is a domain sphere with configured access rights, but it is not possible to connect to it outside the domain. How to make it so that when you try to connect, a window pops up for entering a domain login and password? The file ball is located on Windows Server 2012 r2, the domain operation mode is 2008 r2, the firewall is turned off, everything works as it should inside the domain.

Answer 1

if the PC is outside the domain, but on the same network, then when you try to connect via the network path \\127.0.0.1, a window will pop up for you to enter your login and password.
PS You will need to connect only by IP address

Answer 2

What is the impossibility of connecting outside the domain?