I am looking to implement proxy servers at several locations in my company, and I wanted to get some advice from you guys. A mac mini OSX server (I suppose it would be Lion at this point): it is inexpensive, doesn't require user licenses, and is easy to administer. However, what proxy software would work with this? Squid is one possibility, but I am not sure how good it is, or how difficult it is to get to work with OSX. Another option would be a Linux box, but I'm not sure what proxy software would work best here either. Power and ease of administration are more important than cost.