Kerim KORKMAZ

A. Tolga KILINÇ

H. Özgür BATUR

Berkan KURTOĞLU

Outline

• What is MindGate?

• Motivation for MindGate Project

• Features of System

• Parts of The System

• User scenerios

• Review

What is MindGate?

MindGate:

• Is an expert system

• Is a content filtering gateway

• Is a complete software.

• Categorizes requested web pages

MindGate:

• Controls web access of an organization

• Blocking harmful content

• Caching for fast access

• Keeping user actions’ statistics

What is MindGate?

Demand for content filtering:

Schools

Business Organizations

Governmental Organizations

Motivation for The MindGate Project

MindGate IS NOT

• A security tool

• About server side filtering

• A script based admin tool

• A bandwith limiter

• A P2P blocker

Features of MindGate

• Inspecting all requests and responses on the web traffic • Filtering connections according to predefined policies.

• User groups, web site categories and filter thresholds

• Smart filtering techniques for preventing users entering sites according to policies.

• Tracking of the user actions and generating satistical data

Key Features of MindGate

Expert system for categorization

Improves accuracy in time, with feedback mechanisms and statistic accumulated during a time period.

Using simple but effective heuristics to categorize the web pages.

Highly modularized categorization unit.

Key Features of MindGate

Expanding website checklist

Build by categorizer in time

Corrected by user feedbacks

Faster, because all lists and tables are not stored on an SQL server but stored as XML documents with a completely indexed manner on the RAM.

Key Features of MindGate

Special Indexing Techniques For Fast Access

Using Apache Lucene API

Ram Index for Checklist

Disk Indexing for Log Archive

Complex queries can easily be applied to all these indexed files for searching or listing purposes.

Key Features of MindGate

Threaded Structure

Multi user environment

Concurrency

Synchronisation

Parts Of The System

Core System

Embedded proxy and web server:

Connection Control & Admin Interface

Archive File System

SQL Server: User Account Data

Modules of The System

• Connection Control: requests and responses

• Database Control: static index checking, user

authentication, and log archiving.

• Categorizer: dynamic categorization

• Interface Control: user interaction, page generation

Connection Control

• Handles requests and responses • Interface to proxy• Handles only HTTP Protocol

by

Database Control

Holds Data: (All indexed)

• Checklist (URL - category...)• SessionTable (user - ip number...)• GroupInfo Table (user - group...)

Database Control

Interface to:

• SQL Database• Archive File System(Logs)

Archive Files

Categorizer

Invoked when a page not found in checklist

• Evaluation by a heuristic equation

– Structural Criteria (Colors,Scripts,Links)

– Content Criteria (Meta Data)

Interface Control

• User interaction

• Administrator interaction

• Page generation

• Interface to embedded web server

User (Administrator) Interface

MindGate Status Screen

Architecture Manager Screen

Add New User

Add New Group

Add New Category Screen

Check Lists Screen

Check Lists Screen

Internet Activities Screen

Tolga’s Categries result

Tolga’s URL List

MindGate Status Screen

What is next?

• More sophisticated categorization, new heuristics

• Categorized Data Pool System, to share categorized data

• Extending MindGate to handle other protocols (ie. ftp,pop3,…)

Please! Stay Tuned :)