How does a proxy server work?

 

When you use a web proxy to connect to certain website URL, your browser never connects to that website URL directly. Instead, it always connects to the proxy server, and asks it to get the website for you.

A proxy server receives from you a request for an internet service, such as a request for a webpage. The proxy server looks in its local cache of previously downloaded web pages. If it finds the page, it returns it to you without needing to forward the request to the Internet. If the page is not in the cache, the proxy server, acting as a client, requests the page from the internet. When the page is returned, the proxy server forwards it to you.

To your browser, all internet requests and returned responses appear to be directly with the addressed website URL.

Proxies can be used as a sort of firewall, because it isolates you from connecting to the Internet.
When you connect to a web site, your true IP address will not be shown, but the proxy servers IP address will.

You can use it to protect yourself. It can be used to hide your IP which is useful because it means hackers cannot get info about you when using it. They will only get the proxy servers IP address.

An benefit of using a proxy server is that its cache can serve all users. If one or more internet sites are frequently requested, these are likely to be in the proxy’s cache, which will improve user response time.

Interesting post? Share it!
  • Digg
  • del.icio.us
  • StumbleUpon
  • Sphinn
  • Facebook
  • Google Bookmarks
  • Technorati
  • Live
  • Add to favorites
  • Blogosphere News
  • email
  • LinkedIn
  • MSN Reporter
  • MySpace
  • PDF
  • Print
  • RSS
  • Twitter
  • Yahoo! Bookmarks
  • Yahoo! Buzz

Tags: , , , , ,

Published on: 16/09/2008

Posted under: Proxy101

 

Leave a Comment

Name (required)

Email (required)

Website

Comments

More Blog Post