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

TM

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

TM

 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 

Introduction 

 5