busy!!

Getting busy with the sysadmin work, and having a little of fun with it.
Tried age on net but didnot succeed. Quake gives high ping. So no use. I
am looking for some antivirus that will monitor traffic on gateway. Got
f-secure, CA's eTrust, Trend Micro's Network VirusWall, BitDefender (for
Samba). VirusWall is costly ( $4000 - $12000), therefore f-secure is the
only option. BitDefender will work well for Diglib. i am mastering
iptables and acl of squid.