what should i do to this alert?

i connect my computer to the internet through the same router with another computer,suppose only one computer is truned on,it’s ok,but suppose both 2 computers were turned on,i usually recieve a alert like this:
system is trying to recieve a connection from the internet.what would u like to do?
anybody knows what should i do to this alert?

Welcome to the Forum, dfaggg

This is the other computer in your local network.
If you wish to have a connection with it, allow this.

There are 2 things you can do.

1.If you don’t use network sharing,
turn off NETBIOS function at the TCP/IP configuration.


2.just allow it.

Take your pick.

If you don’t use network sharing service, I recommend you turn off NETBIOS for security reason.