i read about the content filter ceberian
and think about using it.

BUT i've found anywhere on the website www.ceberian.com
any information for virus checking.

please tell me something about the product.

this is an external helper (as i read).

if someone downloads a file over squid, does ceberian more
than URL checking?
where does it get virus information updates (if it can do this)?

how much does such a licence cost?