Content Control from Blue Coat is a next generation Web filtering solution that combines state-of-the-art technology with a managed service business model to provide a unique solution to its customers. Blue Coat hosts and manages policy management, URL categorization, and reporting application services in geographically distributed service points. When installed, the device intercepts user requests for web pages and uses the Content Control from Blue Coat service to determine whether or not to allow the user to view the page. Not only does Content Control from Blue Coat maintain a database of more than 6 million categorized ratings and domains, but it also uses a patent pending Dynamic Real-Time Rating™ (DRTR) technology to categorize new web pages on the fly. The ratings technology not only looks at the meaning of words, but also looks at the words in context and the formatting applied to the words, to determine the category that applies to the page.
This delivery model speeds implementation and minimizes expenses and risks incurred across the application life cycle. Because of its unique architecture, Content Control from Blue Coat provides the most effective and efficient Internet filtering solution available. But it all starts when a user makes a request for a web page.
The User Requests a Page When using a web browser to request a URL, the browser sends that request out over the local network and starts the following process:
1. The agent device intercepts a web request from its local network.
2. The agent sends a request to a Blue Coat Service Point to have the URL categorized.
3. At the same time as step 2, the agent sends a request to the target web server (the origin server) requesting the content of the page.
4. The Service Point looks up the rating of the requested URL. If necessary, the Service Point will request a rating from the Dynamic Real-Time Rating (DRTR) service.
5. The Service Point returns an "allow" or "deny" message to the agent.
6. The agent either allows the incoming page through to the user, or it sends the user a block page describing the reason for denying access to the page.
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