What is a proxy server?

What is a proxy server?

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A proxy server is a server that exists between a client's Web-browsing program and a real Internet server. The purpose of the proxy server is to enhance the performance of user requests and filter requests. A proxy server has a database called a cache, where it stores the most frequently accessed Web pages. So, the next time such pages are requested, the proxy server is able to suffice the request locally. Hence, the access time is greatly reduced. Only when a proxy server is unable to fulfill a request locally, does it forward the request to a real Internet server. The proxy server can also be used for filtering user requests. This may be done in order to restrict the users from visiting non-genuine sites.

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