A proxy server is a network service that allows a client to connect indirectly to a target server through a proxy server. The proxy server can be a transfer station to help the client obtain network information and control and register the forwarded notification. It is an intermediary agency between personal networks and Internet service providers and is mainly responsible for delivering legitimate network information.
Proxy servers can increase access speed, hide real IP addresses, and breakthrough access restrictions. It can be used for various purposes, including connectivity, security, caching, content filtering, and access control. Proxy servers mainly work at the dialog layer of the Open Systems Interconnection (OSI) model and are an essential security function provided by Internet link-level gateways.
The browser will send the request signal to the proxy server, and then the proxy server will send the request to the target website and then transmit it to the browser after receiving the response signal. A proxy server can improve browsing efficiency by caching web page content so the browser does not have to send requests to obtain existing information repeatedly.
The proxy server can realize multiple functions, including accelerating web browsing speed, providing security filtering and flow control, user management, and so on. It can be used as a network firewall to protect the security of the intranet network and solve problems caused by insufficient IP addresses.
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