Proxy server is spelled /ˈprɒksi ˈsɜːvə(r)/ in IPA phonetic transcription. The word "proxy" comes from the Latin word "procurator," meaning "one who acts on behalf of another." The spelling of "proxy" is phonetically regular, with the "x" pronounced as /ks/. "Server" is also phonetically regular, with the "er" pronounced as /ər/. Together, "proxy server" refers to a server that acts as an intermediary between a client and another server, often used for security and performance optimizations.
A proxy server is a computer or software application that acts as an intermediary between a client's device and the internet. It acts on behalf of the client, making requests to web servers or other internet resources, and then providing the client with the requested information.
Proxy servers are commonly used to enhance security and privacy, as well as improve performance and maintain network efficiency. When a client sends a request to access a website or resource, it is sent to the proxy server instead of directly reaching the intended destination. The proxy server then evaluates the request and forwards it to the target server on behalf of the client. This allows the client to remain anonymous and protects their real IP address from being visible to the target server.
Proxy servers can also cache frequently-accessed web content and deliver it to clients without requesting it again from the original server, resulting in faster response times and reduced internet bandwidth usage. Furthermore, they can filter and block requests to specific websites or content, providing content filtering and access control. This capability makes proxy servers a valuable tool in organizations, allowing them to control internet access and enforce security policies.
In summary, a proxy server is an intermediary server that handles requests from clients seeking resources from the internet. It enhances security, privacy, and performance by forwarding requests on behalf of the client, caching frequently accessed content, and providing content filtering capabilities.
The word "proxy" originated from the late 15th century, derived from the Middle English word "proxie" or "prokesie", which was adapted from the Anglo-French word "procure" meaning "procuration" or "person appointed to act on behalf of another". The term was used to refer to a person authorized to act for another or represent their interests.
In the context of technology, "proxy server" became popular in the 1990s when computer networks and internet usage rapidly grew. The word "proxy" was extended to describe a server that acts as an intermediary between client devices (such as computers, smartphones, or tablets) and other servers (such as web servers). The primary purpose of a proxy server is to facilitate requests from clients seeking resources from those servers.