SonicWALL TZ 190 Manuale Utente

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SonicOS Enhanced 4.0 Administrator Guide
Warning
Do not include the prefix “http://” in either the Allowed Domains or Forbidden 
Domains the fields. All subdomains are affected. For example, entering “yahoo.com” 
applies to “mail.yahoo.com” and “my.yahoo.com”. 
To remove a trusted or forbidden domain, select it from the appropriate list, and click Delete
Once the domain has been deleted, the Status bar displays Ready.
Enable Keyword Blocking 
To enable blocking using Keywords, select Enable Keyword Blocking.Click Add, and enter 
the keyword to block in the Add Keyword field, and click OK
To remove a keyword, select it from the list and click Delete. Once the keyword has been 
removed, the Status bar displays Ready
Disable all Web traffic except for Allowed Domains 
When the Disable Web traffic except for Allowed Domains check box is selected, the 
SonicWALL security appliance only allows Web access to sites on the Allowed Domains list. 
With careful screening, this can be nearly 100% effective at blocking pornography and other 
objectionable material.
Consent
The Consent tab allows you to enforce content filtering on designated computers and provide 
optional filtering on other computers. Consent can be configured to require the user to agree to 
the terms outlined in an Acceptable Use Policy window before Web browsing is allowed
.
To enable the Consent properties, select Require Consent
  •
Maximum Web Usage (minutes) - In an environment where there are more users than 
computers, such as a classroom or library, time limits are often imposed. The SonicWALL 
security appliance can be used to remind users when their time has expired by displaying