ZyWALL USG Series User’s Guide
739
C
HAPTER
39
Anti-Virus
39.1 Overview
Use the Zyxel Device’s anti-virus feature to protect your connected network from virus/spyware
infection. The Zyxel Device checks traffic going in the direction(s) you specify for signature matches. In
the following figure the Zyxel Device is set to check traffic coming from the WAN zone (which includes
two interfaces) to the LAN zone.
Figure 512
Zyxel Device Anti-Virus Example
The anti-virus matches a file with those in a virus database. This is done as files go through the Zyxel
Device.
Virus, Worm, and Spyware
A computer virus is a type of malicious software designed to corrupt and/or alter the operation of other
legitimate programs. A worm is a self-replicating virus that resides in active memory and duplicates itself.
The effect of a virus attack varies from doing so little damage that you are unaware your computer is
infected to wiping out the entire contents of a hard drive to rendering your computer inoperable.
Spyware infiltrate your device and secretly gathers information about you, such as your network activity,
passwords, bank details, and so on.
Summary of Contents for USG110
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