I've tried following instructions for little sntich but am still confused, with options to block outgoing and incoming connections, plus choices of domain, hostname, and IP address, its a lot to take in. What needs to be blocked, and if anything needs to be allowed (esp for crashing apps) then what do those look like. I've read the wiki and some people have mentioned changing a hostname file using the terminal, which scares me - I try to never touch the terminal because I have no idea about Linux commands and such.