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- In computer
networks, a proxy server is a server (a computer system
- or an
application program) which services the requests of its clients by
forwarding requests to 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. The proxy server provides the
resource by connecting to the specified server and requesting the service on
behalf of the client. A proxy server may optionally alter the client's request
or the server's response, and sometimes it may serve the request without
contacting the specified server. In this case, it would 'cache' the first
request to the remote server, so it could save the information for later, and
make everything as fast as possible. A proxy server that passes all requests and replies unmodified is usually
called a gateway or sometimes
tunneling proxy.
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