What is a Proxy server?

Proxy: The authority to represent someone else, especially in voting. A person authorized to act on behalf of another.

A proxy server in a computer network, is setup as a gateway to the internet (or any other servers) for network clients. In such a setup, the proxy server acts as an intermediary between local network clients and internet. A client connects to the proxy server with a request to resource on internet and proxy server evaluates the request and replies from its cache (if caching is the purpose for implementing a proxy) or forwards to the actual server.

What are some very common types?


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