Proactive content filtering and Access Control
Figure 2 Site Rating process flow
GFI WebMonitor can check for adult content in the URLs which users
want to access. This is achieved by querying Yahoo! SafeSearch
which is an online database that classifies and categorizes various
sites on the Internet. When a user requests access to a site, GFI
WebMonitor will query the Yahoo! SafeSearch
database for the
Content Type held by that target URL. If the online web filter classifies
the site as having adult content, GFI WebMonitor will add the target
URL to the Adult Destination Set on the ISA Server. If the ISA Server
is configured to block access to the sites listed in the Adult
Destination/URL Set the user will be denied access to that site.
The benefits of a web based content filter
It is estimated that three to five million websites are newly established
or renamed each week. This means that administrators strive to
maintain their local content filter databases updated. Missing one
update might jeopardize the accuracy of a content filtering system.
GFI WebMonitor performs content filtering through a web based filter
and does not require a locally maintained filter database. All the
required filter data is stored on the remote online database which is
constantly maintained and updated by third party content classification
professionals. The benefits of using a web based content filter include:
Automatically updated and maintained URL block list.
No local updates required This reduces administrative loads by
eliminating bothersome list updating procedures and research.
Adult sites are notoriously known for being accompanied by
unwanted spyware/Trojan installations. Through an automatically
managed adult site list you reduce the chances of your users
GFI WebMonitor 3