Like having port 6379 be open to anyone who happens to wander by? Your firewall was horribly configured and you got burned, take this as a learning opportunity to fix your mistakes.
exactly, but one wrong doesn't excuse another. just because I didn't have my firewall configured correctly doesn't mean software that I use should a) have insecure defaults and b) not make a song and dance about them on the page designed to get you up and running with it.