I've been reading and learning from this forum but i got stuck in my learning proces. While I try to secure my computer I try to find out it's vulnarebilities by trying to get into the system of a friend of mine (he know's) So I got his IP found an open port (139, NetBios and 8053). Now I telnet to these ports and get a connection. Are there certain commands which these ports are accepting? I tried some general commands like help, "help;" login, "exit;" but nothing happens. So...what now?