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Overview of Web Security Appliance Architecture and Content Analysis Strategy

This overview presents the current architecture of our Web Security Appliance (WSA) infrastructure, highlighting its deployment with WCCP (Web Cache Communication Protocol) for seamless integration. The WSA allows for transparent operation across websites, with 60 sites recently placed in bypass mode to exclude them from security reviews. Ongoing analysis will identify the root causes of vulnerabilities. The current phase focuses on malware and phishing detection, while future plans include transitioning to a full Layer 3 proxy mode with enhanced content blocking capabilities and user authentication.

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Overview of Web Security Appliance Architecture and Content Analysis Strategy

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Presentation Transcript

  1. Information Security Team Web Security Appliance Overview

  2. Current Architecture • Deployed WSA infrastructure with WCCP • WCCP (Web Cache Communication Protocol) provides a layer 2 redirection capability • http://en.wikipedia.org/wiki/Web_Cache_Communication_Protocol • Transparent to most web applications and browsers • 60 web sites were placed in bypass mode after go live. • Bypass allows all traffic to that site to be excluded from security review • Ongoing analysis is underway to determine root cause • All sites are vendor or location specific with DNS, routing, or other connectivity modifications

  3. Content Analysis and Blocking • Content Analysis • Industry term for monitoring web content, performing analysis, and rendering a reaction • Additional content analysis can be performed at many levels • Current phase manages malware and phishing based analysis • Next phase might global management of porn, gambling, hate, and hacker content. • Discussion on blocking ad delivery to internal clients

  4. Future Architecture • Conversion to full layer 3 proxy mode • Consideration will be given to user authenticated HTTP access • Content blocking exception process • Additional catalog exclusion considerations • As new sites and catalogs create risk and exposure to the organization they’ll be placed on the consideration list for global deny • Data Loss Prevention will be considered as an add on module for this infrastructure

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