I wanted to test my wifi security, but I don't know how. My friend just went to a "computer show" and purchased some software that is supposed to "crack" any wifi and we had a conversation over the phone and he wants to prove that this software will crack my wifi. My question really is how can I make sure he does not crack my password/passphrase? According to him, the software can crack WEP, WPA, and my WPA2 encryption.
Lastly, how would I be able to test my own network. What I wanted to do was since I have three pc's/laptop's within my wifi, how could I connect to another pc/laptop or view other files within my separate pc's/laptops without knowing their ip address?