ZyXEL Communications USG FLEX H Series User Manual page 298

• HAM scanners may reduce computing performance as they also share resources (such as CPU time)
on the computer for file inspection.
• You have to update the malware signatures and/or perform malware scans on all computers on the
network regularly.
A network-based anti-malware (NAM) scanner is often deployed as a dedicated security device (such
as your Zyxel Device) on the network edge. NAM scanners inspect real-time data traffic (such as email
messages or web) that tends to bypass HAM scanners. The following lists some of the benefits of NAM
scanners.
• NAM scanners stop malware threats at the network edge before they enter or exit a network.
• NAM scanners reduce computing loading on computers as the read-time data traffic inspection is
done on a dedicated security device.
Chapter 18 Anti-Malware
USG FLEX H Series User's Guide
298