Contents

• Contents
• List of Figures
• INTRODUCTION
  • History
  • Goals
• BACKGROUND
  • HTML - Hypertext Markup Language
    • HTML 2.0
    • HTML 3.2
    • HTML 4.0
  • URL - Uniform Resource Locator
  • HTTP - Hypertext Transport Protocol
    • HTTP/0.9
    • HTTP/1.0
    • HTTP/1.1
    • Secure HTTP
  • HTTP Proxy
• REASONS TO FILTER
  • Privacy
    • Cookies
    • User Information
  • Security
    • JavaScript
    • Java
    • ActiveX
    • Referer
  • Unwanted Features
    • GIF Animations
    • BLINK and MARQUEE Tags
    • Background Music
    • New Windows
  • Implementing New Features
    • Access Control
    • View HTTP Headers
    • Automatically Fill-in Forms
    • Dynamic Configuration
• IMPLEMENTATION
  • Filtering System
    • Server
    • Handler
    • Filter
    • Filter Factory
    • Filter Manager
    • Http Relay
    • ObjectStream
    • HTML Parser
  • Filter API
    • Filter
    • Request Filter
    • Reply Filter
    • Redirect Filter
    • Content Filter
    • Http Filter
    • Filter Factory
    • Example
• Using Filters
  • Privacy
    • User-Agent and Referer
    • Cookies
  • Security
    • JavaScript and Java
    • ActiveX
  • Unwanted Features
    • GIF Animations
    • BLINK and MARQUEE
    • Background Music
    • New Windows
  • Implementing New Features
    • Access Control
    • View HTTP Headers
    • Fill-in Forms
    • Dynamic Configuration
• RELATED PROJECTS
  • WebFilter
  • Internet Junkbuster
  • InterMute
  • Crowds
  • PICS: Platform for Internet Content Selection
• CONCLUSION
• Bibliography