Proxy server is a special Internet server that sits between an Internet link and a private network. It stores local copies of remote Web pages and files that users request (by proxy, as it was, so that it answers subsequent access requests nearly immediately). It also filters outgoing requests by domain name or IP address and severely to completely limit incoming requests to access the proxy server’s private network side.
Proxy server is a system that stores frequently used information closer the end users to provide faster access or to reduce the load on another server; it also serves as the gateway to the internet.