SonicWALL 4.5 Manuale Utente

89

Enforced Client Product Guide

Using the Virus and Spyware Protection Service

4

Scanning client computers 

The virus and spyware protection service safeguards computers by automatically scanning for 
viruses and spyware. At any time, users can perform manual scans of files, folders, or email, and 
administrators can set up scheduled scans. 

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The behavior of the scanning features on client computers is defined in the policies that you 
configure using the SecurityCenter. Policy settings determine the types of files, programs, and 
other items detected; whether users can manage their detections; how frequently computers 
check for updates; and when scheduled scans occur. See 

 for instructions on configuring these settings in policies. 

Scan automatically (on-access scans) 

The virus and spyware protection service scans files and folders on client computers whenever 
they are accessed, which is referred to as an on-access scan. 

The default on-access scanning policy is: 

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All types of files are scanned when opened, and again when closed (if they were modified). 

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All email attachments are scanned when accessed and when saved to the hard drive, 
protecting the computer from email infections. 

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Programs are scanned for spyware identifiers, to detect if a spyware program attempts to run 
or a program attempts to install spyware. 

To customize on-access scans, administrators can: 

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Exclude certain folders, file types, or programs from on-access scanning by configuring the 
virus and spyware protection settings in policies (see 

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Select an option to scan only files meeting the current file extension criteria specified in the 
detection definition (

DAT

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Select an option to scan compressed archives (see 

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Specify other options for scanning email attachments and spyware (see 

). 

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