right, this is annoying me now, i have tried many times to setup my new router, but, i very quickly become confused, do i really need to setup port blocking / routing (what to allow), or am i safe, because i use *nix ? because, if the filters do need / want setting up, i got a h3ll of a lot to learn BTW: yes as many of you know, i'm paranoid, but, i also want to setup this new ASDL2 router, help, TIA