Content Filtering and Bloc king Page 101
Trusted Domains
Trusted Domains can be added in the Restr ict We b F ea tu res se cti on o f the Configure tab. If you tr ust
content on specific domains, you ca n se l ec t Don’t block Java/ActiveX/Cookies to Trusted Domains
and then add the Trusted Domains to the SonicWALL using the Add Trusted Domain field. Java
scripts, ActiveX, and cook ies are not blocked from Trusted Domai ns if the checkbox is selected.
Message to display when a site is blocked
Enter your customized text to display to the user when access to a blocked site is attempted. The
default message is Web Site block ed by SonicWALL Filter. Any message, including embedded HTML,
up to 255 characters long, can be entered in this field.
URL List

The URL List page allows you to see the status o f th e Cont ent Filt er Lis t as wel l as config ure

a specific time to download the list. You can also determine how the SonicWALL responds

when a Content Filter List is unavailable. Selecting categories to block is also configured

on this page.

List Status

This section of the URL List tab indicates the status of the URL list. If the Content Filter List is loaded,
a status message is displayed in this section.

List Updates

It is important to note that Host names, and not TCP/IP addresses, are used for all filtering. Many
blocked sites operate se rv er po ols, w her e ma ny c omp uters serv ice a si ngle h ost nam e, making it
impractical and difficult to add and maintain the numerical addresses of every server in the pool.
Many sites included in the Content Filter List regularly change the IP address of the server to try to
bypass Content Filter Lists. For this reason, maintaining a current list subscription is critical for
effective content fi ltering.