SonicWALL 4.5 Manuale Utente

54

Enforced Client Product Guide

Using Enforced Client

3

Users can check for updates manually at any time. In addition, you can configure optional policy 
settings for updating tasks. 

„

„

„

„

Update automatically 

The software on each client computer automatically connects to the Internet directly or to a relay 
server and checks for updated components. Enforced Client checks for updates five minutes 
after a user logs on and at regular intervals thereafter. For example: 

„

If a computer is normally connected to the network all the time, it checks for updates at 
regular intervals throughout the day. 

„

If a computer normally connects to the network each morning, it checks for new updates five 
minutes after the user logs on each day, then at regular intervals throughout the day.

„

If a computer uses a dial-up connection, the computer checks for new updates five minutes 
after dialing in, then at regular intervals throughout the day.

By default, computers check for new updates every 12 hours. You can change this interval by 
configuring a policy setting (see 

). 

Update manually 

At times, users might want to check for udpates manually. For example, when a computer 
appears to be out-of-date in your administrative reports, users might need to update manually as 
part of the troubleshooting process.

To update manually: 
Double-click 

 in the system tray, or click the icon and select 

. 

Update during an outbreak 

When an outbreak is identified by SonicWALL Avert Labs, they issue an outbreak 

, which 

is a special detection definition (

DAT

) file marked as 

 or 

 importance. It is specially 

encoded to inform the first computer receiving it to share the update immediately with other 
client computers on the network. 

Update support for some operating systems is ending. Once support ends, client computers 
running those operating systems will no longer be protected against new threats. See 

 for more information. 

On computers where a CHAP or NTML proxy is set up in Internet Explorer, automatic updates 
do not work. 

In rare cases, SonicWALL might send an 

EXTRA

.

DAT

 file with instructions for manually 

installing it.