First off, I consider myself technically sound and knowledgeable.. I'm a computer/electronic technician.
The Situation:
The issue I'm having is with remote logging into a family members computer. I can talk to him via IM and such. But when I ask him to give me his IP it comes off as internal (192.168.0.3, gateway is 192.168.0.1) and I can't ping it. My guess is that this is because he is behind the router. I told him to go to 'what is my ip dot com' and it gave me some jacked up IP that I can't ping. I know the program works because I had him remote login to my computer by simply giving him my IP and the password.
The Question:
How can I get his real IP so that I can ping him and then remote into his comp? My guess is something through the host computer but I forget the command that shows all the computers on the network and their real IPS (I wanna say its like network -a) or something. Thanks for the help in advance.