Usefulness of Proxies - PowerPoint PPT Presentation

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Usefulness of Proxies

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A proxy server is a server that acts as an intermediary for requests from clients seeking resources from other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource available from a different server and the proxy server evaluates the request as a way to simplify and control its complexity. – PowerPoint PPT presentation

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Title: Usefulness of Proxies


1
(No Transcript)
2
Proxy
  • A proxy server is a server that acts as an
    intermediary for requests from clients seeking
    resources from other servers. A client connects
    to the proxy server, requesting some service,
    such as a file, connection, web page, or other
    resource available from a different server and
    the proxy server evaluates the request as a way
    to simplify and control its complexity.

3
Usefulness of Proxy
  • To keep machines behind it anonymous, mainly for
    security.
  • To speed up access to resources. Web proxies are
    commonly used to cache web pages from a web
    server.
  • To prevent downloading the same content multiple
    times.
  • To log / audit usage.
  • To scan transmitted content for malware before
    delivery.
  • To scan outbound content.
  • To bypass website restrictions at work.
  • Access enhancement/restriction

4
  • To apply access policy to network services or
    content.
  • To access sites prohibited or filtered by your
    ISP or institution.
  • To bypass security / parental controls.
  • To circumvent Internet filtering to access
    content otherwise blocked by governments.
  • To allow a web site to make web requests to
    externally hosted resources when cross-domain
    restrictions prohibit the web site from linking
    directly to the outside domains.
  • To allow the browser to make web requests to
    externally hosted content on behalf of a website
    when cross-domain restrictions prohibit the
    browser from directly accessing the outside
    domains.

5
(No Transcript)
6
Geological Proxy
  • In the study of past climates, known as
    paleoclimatology, climate proxies are preserved
    physical characteristics of the past that stand
    in for direct measurements, to enable scientists
    to reconstruct the climatic conditions that
    prevailed during much of the Earth's history. As
    reliable modern records of climate only began in
    the 1880s, proxies provide a means for scientists
    to determine climatic patterns before
    record-keeping began. Examples of proxies include
    ice cores, tree rings, sub-fossil pollen,
    boreholes, corals, and lake and ocean sediments.
    The character of deposition or rate of growth of
    the proxies' material has been influenced by the
    climatic conditions of the time in which they
    were laid down or grew. Chemical traces produced
    by climatic changes, such as quantities of
    particular isotopes, can be recovered from
    proxies. Some proxies, such as gas bubbles
    trapped in ice, enable traces of the ancient
    atmosphere to be recovered and measured directly
    to provide a history of fluctuations in the
    composition of the Earth's atmosphere.To produce
    the most precise results, systematic
    cross-verification between proxy indicators is
    necessary for accuracy in readings and
    record-keeping

7
Unblocked proxy
  • There are so many sites which are blocked, by
    using proxy you can be able to access those
    sites. Like e.g
  • www.aabcdallas.org
  • Facebook.com(china)
  • Youtube.com
  • Google.com
  • Twitter.com

8
Elite Proxy
  • Elite proxies are the proxies which hides their
    identity. Proxies pcs become any firewall beside
    data obstructive a crook system placed within the
    ISP's additionally to system employees at
    intervals the computer network atmosphere you've
    got to disable convenience or filtration content
    demands to specific websites considered
    uncomfortable additionally to unsafe for your
    system additionally to shoppers.Improve potency
    web sites used by merely website hosts within the
    circle for just about anyplace within the
    personal proxy . once any sort of webhost demands
    precisely the same website, the particular proxy
    host utilizes your d information rather than
    finding that once victimization the knowledge
    provider.

9
  • THANK YOU
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