• Netscape Proxy Server Implementation
  • Proxy Server inside firewall
  • Proxy Server at Remote and Internet
  • Microsoft Proxy Server 0 Presentation Outline




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    Fine Grained Filtering

    • Access controls for sites, documents, and protocols.
    • Content filtering - built-in virus scanning.
    • Cross - platform generic protocol support.

    Administrative Control

    • Ensures that users access network resources safely and productively.
    • Can specify distinct access controls based on access type.
    • Allows administrators to create custom HTML files to be returned to users when access is denied.

    Netscape Proxy Server Implementation

    • Bottleneck locations for implementing Proxy Server.
      • Internet Gateway—Forward Proxy.
      • Branch Office—Forward Proxy.
      • Internet Gateway—Reverse Proxy.

    Internet Gateway - Forward Proxy

    • Provides gateway services at the application level with a web proxy as well as at the circuit level through SOCKS.
    • Enhances Internet access.
    • Web content caching reduces response times.
    • Facilitates bandwidth conservation.
    • Helps reduce overall communications expense.
    • Content filtering and access control allows easy management of intranet material.

    Proxy Server inside firewall

    • Internet
    • Proxy
    • LAN
    • PC
    • PC
    • PC
    • Firewall

    Branch Office—Forward Proxy

    • Multiple proxy server allows chaining proxies together to create a hierarchical caching system
    • Proxy chaining allows multiple Netscape Proxy Servers to cache content locally setting up a hierarchy of servers for client access.

    Proxy Server at Remote and Internet

    • Internet
    • Proxy
    • Firewall
    • Backbone
    • Proxy
    • LAN
    • PC

    Internet Gateway—Reverse Proxy

    • Proxy Server is placed outside firewall to represent a content server to external clients.
    • Expose selected content without exposing web servers that host it or other elements of private network.
    • Multiple reverse proxy servers can be used to balance the load on an over-taxed web server.

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    Microsoft Proxy Server 0 Presentation Outline

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