ZyXEL Communications ZyWall 110 User Manual page 520

Chapter 31 Anti-Virus
A network-based anti-virus (NAV) scanner is often deployed as a dedicated security device (such as
your ZyWALL/USG) on the network edge. NAV scanners inspect real-time data traffic (such as E-
mail messages or web) that tends to bypass HAV scanners. The following lists some of the benefits
of NAV scanners.
• NAV scanners stops virus threats at the network edge before they enter or exit a network.
• NAV scanners reduce computing loading on computers as the read-time data traffic inspection is
done on a dedicated security device.
ZyWALL/USG Series User's Guide
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