After installing CSF (firewall), the report stated that I should stop cups, canna, iiim, and anacron. I know what cups is; that has to do with printing, and is not necessary for my server. But I can't find anything about canna and iiim. What do these do, and how do I know if my server needs them? I also read that anacron has to do with running cron jobs. I DO have a few custom-built crons; does this mean that I need anacron in order to run these, or is anacron something different?