ZyXEL 35 Guia Do Utilizador

 

 

All contents copyright (c) 2006 ZyXEL Communications Corporation.   

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Because BlueCoat rates sites at the domain or directory level, the database actually covers hundreds of 

millions of unique web pages.  

 

BlueCoat continuously updates the ratings database, but BlueCoat's outsourced model does not require 

customers to update a local database. 

Unlike other Internet content filtering solutions, BlueCoat's outsourced solution does not require clients to 

receive large database updates daily or weekly. Instead, BlueCoat customers all access the same ratings 

database. When a user requests a URL not contained in the database, the BlueCoat solution uses Dynamic 

Real-time Rating to assign a rating to that page. All unrated URLs are further analyzed by background 

technologies and human raters. 

 

 

BlueCoat provides category ratings for Web sites. Based on the category rating from BlueCoat, users of 

ZyXEL appliances then define blocking/forwarding policy in WEB GUI. 

Do humans review the web sites? 

BlueCoat uses expert Web content raters to train the ratings technology. 

Initially, category experts create a list of URLs that represent good content for each category. The ratings 

technology then uses this initial set of pages to recognize content similar to those initial pages. Through 

BlueCoat's internal processes, the ratings technology learns to better categorize pages as it rates more and 

more user requests. The BlueCoat staff also continually adds new pages to all categories and evaluates 

any pages that the rating process could not recognize. Users can request BlueCoat staff to rate specific 

new pages or review automatic ratings assigned by the technology. Through this process, the ratings 

technology becomes more accurate at categorizing future user requests. 

BlueCoat's Web content raters periodically review each content area. They also examine pages based on 

categorization requests from end-users. 

BlueCoat periodically reviews certain content areas to fine tune the ability of the ratings technology to 

recognize specific types of content. Also, when users believe a page has received an incorrect rating, 

BlueCoat rating experts will review the categories assigned and make changes as necessary. BlueCoat 

also uses the human-rated sites to further train and improve the content analysis system.