Indeed this is unpleasant and the main reason for that is that it's been covered a lot of times.
Sorry for posting this, it might be unpleasant to moderators.
Here's the problem:
I've seen and read lots of tutorials on exploitation and penetration attacks, but they only focused on a LAN network. If backtrack tools (especially metasploit) can exploit and create session/s in a said network, how can we exploit outside lan network? I mean penetration testing over the internet like (Attacker's IP: 202.---.---.--- and Victim's IP 69.---.---.---). Not the same as always been tutored of (Attacker: 192.168.1.--- and Vimtim 192.168.1.---).