I have IP from my friend, he is running xp and I've tried to telnet(or telnet with netcat) to his computer.(not unauthorized, we are ineterested in that). But I dont know the ports, he is running and if I try to scan the IP, no answer will be shown. So I dont know on which port should I connect. Can you help me? (maybe it is necessary that when i type on his computer in command line ipconfig, it will show some portal IP and then IP from his(?) computer. I thank you for answers, and please don't hurt me for the english, it is not my mother tongue.