Cisco Cisco Packet Data Gateway (PDG) Documentation Roadmaps
Content Filtering Support Overview
▀ Category-based Content Filtering Support
▄ Cisco ASR 5000 Series Product Overview
OL-22938-01
Rater Package Model Files
The real-time analyzer requires a model file that defines the features which are necessary to classify a Web page as
belonging to a specific category and language. A model file per category is created by analyzing the traits of thousands
of pages of that category and thousands of pages that does not belong to that category. For some categories, a feature
counter file is used to decide whether or not to evaluate the Web page against the respective model file.
belonging to a specific category and language. A model file per category is created by analyzing the traits of thousands
of pages of that category and thousands of pages that does not belong to that category. For some categories, a feature
counter file is used to decide whether or not to evaluate the Web page against the respective model file.
When URL Blacklisting solution is the only content filtering enabled on a system, no SRDB tasks are spawned at
startup. Only when either Category-based Content Filtering is enabled in isolation, or with URL Blacklisting, the SRDB
tasks are spawned.
startup. Only when either Category-based Content Filtering is enabled in isolation, or with URL Blacklisting, the SRDB
tasks are spawned.
Content Rating Rules Update Server
This is a third-party content rating solution for exporting content filtering rules database information to the Category-
based Content Filtering system. In addition, while exporting database updates, it collects reports of URLs processed by
ECS and Content Filtering services that are reported as unknown in the deployed static rating database. This server
analyzes these URLs and provides the rating in future updates for static rating database.
based Content Filtering system. In addition, while exporting database updates, it collects reports of URLs processed by
ECS and Content Filtering services that are reported as unknown in the deployed static rating database. This server
analyzes these URLs and provides the rating in future updates for static rating database.
This server provides the following supports to Master Content Rating Database Server (MCRDBS) for the content
rating function:
rating function:
Provides full Vendor Format Master Database files (VFMDB) to Master Content Rating Database (MCRDB)
server on request from MCRDBS.
Provides incremental Vendor Format Master Static URL Database file (VFMDB-INC) to MCRDBS when any
incremented VFMDB is available and requested from MCRDBS.
Imports the Unknown URLs file (Vendor Format Unknown Database File (VFUNKDB)) from MCRDBS.
Exports Vendor Format Dynamic Rating database to Master Content Rating Database Server (MCRDBS) for use
with the Third-party Dynamic Content Rating Support.
Master Content Rating Database Server (MCRDBS)
The Category-based Content Filtering solution provides a Master Content Rating Database Server to convert the
VFMDB to SFMDB. It handles both full and incremental updates and processes them on a configured schedule.
VFMDB to SFMDB. It handles both full and incremental updates and processes them on a configured schedule.
This server is also responsible for distribution of SFMDB data files to WEM servers in the customer support
infrastructure on a configured interval.
infrastructure on a configured interval.
The server is responsible for following functionality as the MCRDBS solution:
Database fetching: Pulls VFMDB files from third-party Content Rating Server to MCRDBS.