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This article analyzes "what the proxy server and its request process are like". The content is detailed and easy to understand. Friends who are interested in "proxy server and its request process" can follow the editor's train of thought to read it in depth. I hope it will be helpful to you after reading. Let's learn more about "proxy server and its request process" with the editor.

Proxy server is an important server security function, which plays an important role in the session layer of the Open Systems Interconnection (OSI) model and acts as a firewall. The functions include acting as a firewall, setting access rights without users, setting user authentication and accounting functions, increasing buffers, improving access, and so on.

Ip proxy server software, agents also known as network agents, network agents are mostly used to connect INTERNET (Internet) and LocalAreaNetwork (local area network). Network agent is a unique Internet service, which allows a network terminal to connect indirectly with another network terminal (usually a network server) according to this service. Some Internet devices such as gateways and wireless routers have network proxy function. It is generally believed that proxy service is beneficial to ensure the privacy protection or security of network terminals and avoid attack. The computer system or other kinds of network terminals that provide proxy services are called proxy servers.

The whole process of a complete proxy server request is:

The client first establishes a connection with the proxy server, and then requests to establish a connection to the overall target network server or get the specific resources of the overall target network server according to the proxy protocol applied by the proxy server. In the latter case, the proxy server is likely to download the resources of the overall target network server to the local cache file, and if the resources that the client wants to obtain are in the cache file of the proxy server, the proxy server does not send a request to the overall target server, but immediately returns to the cached resources.

Some agent protocols allow the network agent to change the initial request of the client and the initial response of the overall target network server to take into account the needs of the agent protocol. The options and settings of the proxy server in computer programs generally include a "server firewall" that allows customers to enter a proxy address that obscures their Internet activities and allows them to bypass Internet filtering to complete Internet access.

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