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Proxy Servers August 10, 2005

Posted by Coolguy in Networks.
  • Proxy server is a program that acts as an intermediary between computers on your LAN and computers on the Internet
  • Proxy servers often have a cache built in to make web surfing faster
  • Some proxy servers also allow the filtering of web content or domains. Additionally, almost all proxy servers support logging
  • Workstations on your network must request data (like web pages) from the proxy server to access the internet.
  • The proxy server then fetches the internet data, checks it’s filters, and returns it to the workstation that requested it.
  • Because a proxy server does all of the data requesting, each machine must be configured to make all internet requests from the proxy server – not the internet
  • Proxy servers are not a ‘transparent’ connection sharing technology
  • Proxy servers provide three main functions:
    firewalling and filtering
    connection sharing
  • Proxy servers are also more difficult to install and maintain than firewalls, as proxy functionality for each application protocol like HTTP, SMTP, or SOCKS must be configured individually





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