• Dual-Homed Host Architecture
  • Screened Host
  • Proxy Server implemented behind a screening router
  • Screened Sub-network
  • Microsoft Proxy Server 0 Presentation Outline




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    Reverse Proxy Server

    • Internet
    • Reverse
    • Proxy
    • Web
    • Server
    • LAN
    • PC
    • PC
    • PC
    • Firewall

    Architecture

      • Reverse Proxy
      • Server Stand-in
      • Load Balancing

    Dual-Homed Host Architecture

    • Has two network interfaces, one connected to an internal LAN and the other to the Internet.
    • Incorporates a firewall software package.
    • Provides caching, fine-grain filtering and virus scanning.

    Proxy Server with a Dual-Homed Host Firewall

    • Internet
    • Proxy Server & Firewall
    • LAN
    • Client
    • Client

    Screened Host

    • Consists of a router deployed in front of a server that is hosted on a private network.
    • Router can be traditional hardware router or firewall software application providing packet-filtering capabilities and restricting inbound access to internal network.
    • Appropriate for small to medium-sized intranets that require a simple, yet effective security solution.

    Proxy Server implemented behind a screening router

    • Internet
    • Router
    • Proxy Server
    • LAN
    • Client
    • Client

    Proxy Server Implemented Behind a Screening Firewall

    • Internet
    • Firewall Software Router
    • Proxy Server
    • LAN
    • Client
    • Client

    Screened Sub-network

    • Consists of multiple routers sandwiching a non-secure network that is outside or part of the firewall solution.
    • Commonly referred to as a DMZ (demilitarized zone). Proxy is deployed in DMZ and is allowed access to both internal and external networks through routers.
    • Popular architecture choice for larger organizations with heavily trafficked gateways.

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    Microsoft Proxy Server 0 Presentation Outline

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