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Proxies
are one of the very useful computer networking techniques, used by
many computers these days especially for the internet connection
networking. Proxy server is basically and application program which is
commonly known as a server, used to service the clients requests so as
to forward it to other available servers.
The
client is connected to the proxy server, which requests for some
services involving the request of files, connections, web pages, and
many other resources which are available from the other different
connected servers.
The
caching property of the proxy server is very useful for the internet,
as it can process and return the result of a request without even being
in contact with the destination server, this is achieved by using the
content which had been saved earlier by the client's request. The
proxies with the caching ability keep the copies of the latest and the
frequently visited resources saved in the network memory so that they
can be used later on. This also allows the ISP or the internet service
providers to reduce the usage and costs involving in the networking so
as to elevate the over performance.
The
main purpose of the proxies is to connect to the available server so
as to provide with the resources, on the behalf of the client. The
proxy sever also has the option of altering the request of the client
or even the response of the server approached. Sometimes the proxy
server can also process the request without even contacting the sources
server. The proxy server which can pass all requests and reply
unmodified is also known as the gateway or sometimes the tunneling
proxy.
Proxy
servers can be used to place address in the local computer of the user
which connects the user and the destinations server or the internet.
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