Due to our user's increasing expertise at downloading virus and the like, we are investigating adding Antivirus to our Squid proxy.
A casual Google reveals several free and one paid:
None of the 'free' ones have reached v1 yet, nor do any inspire huge confidence form their websites (although of course I would rather they spent their time on the app rather than their website!).
Does anybody have experience with any of these (or any other similar apps). If so are they suitable for a production network with 400ish concurrent users, and what sort of CPU/RAM requirements does it have?
Also while we are at it - Would you recommend using ClamAV as the scanning engine or something like McAfee?