Web Filtering System Dynamic Category Evaluation
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Solution Overview
Problem
Existing Web filtering systems struggle to effectively restrict access to new and unregistered Web sites, as the rapid growth of Web sites outpaces categorization, leaving administrators uncertain about the appropriateness of filtering settings for non-administrator terminals.
Innovation Solution
A Web filtering system that includes a router apparatus, an administrator terminal, and a filtering server, where the router apparatus requests category evaluation from the server for unregistered Web sites, and the administrator terminal evaluates and transmits the category evaluation result back to the router apparatus, allowing for dynamic categorization and filtering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Web filtering is implemented using a fixed filter system, then access to known harmful sites is restricted, but new unharmful sites with unregistered categories cannot be viewed
Solution Approach 1:
The system transitions from a static fixed filter to a dynamic evaluation mechanism where new sites are assessed in real-time. The router apparatus dynamically requests category evaluation from the filtering server and can invoke administrator terminal for manual categorization when automatic classification fails, enabling the system to adapt to new sites while maintaining filtering reliability.
Solution Approach 2:
The administrator terminal serves as an intermediary between the router apparatus and the filtering server. When a new site's category is unregistered, the administrator terminal facilitates manual evaluation and categorization, bridging the gap between automatic filtering and the need to accommodate new sites. This intermediary enables flexible decision-making for unclassified sites.
2Extent of automation
If automatic category classification is used, then filtering is applied automatically, but administrators cannot evaluate new sites that lack registered categories
Solution Approach 1:
The system implements feedback mechanisms where the router apparatus requests category evaluation from the filtering server and receives results that feed back into the filtering decision process. When automatic classification fails for new sites, the system seeks administrator input, creating a feedback loop that combines automation with human expertise for comprehensive site evaluation.
3Reliability
If the filtering system is updated frequently to include new categories, then coverage of harmful sites improves, but the system complexity and update management increases
Solution Approach 1:
The filtering server automatically provides category evaluation for new sites without requiring manual system updates. The system self-updates by receiving real-time category information from the filtering server, eliminating the need for administrators to manually maintain filter databases while ensuring comprehensive coverage of both known and new sites.
Data Source
AI summary
A Web filtering system includes a router apparatus, an administrator terminal, and a filtering server. The router apparatus transmits a request for a category of a Web site to the filtering server. If the router apparatus receives category information about the Web site from the filtering server, the category information indicating that category evaluation of the Web site has not been performed and the category has not been registered, the router apparatus transmits a category evaluation request packet to the administrator terminal The administrator terminal transmits a category evaluation result of the Web site to the router apparatus.