Proxy Server

A proxy server is a computer server that acts as an intermediary between end users on an internal network and the wider Internet. This server provides various functions, primarily focused on enhancing security, managing network performance, and filtering content. By routing user requests through itself, the proxy server separates end users from the websites they browse. This separation helps to anonymize user activity and can protect the identity and privacy of network users.

One key function of a proxy server is to handle connections between the internal network and external servers. When a user inside the network requests a webpage, for instance, the request is sent to the proxy server. The proxy server then evaluates the request according to its filtering rules. It may deny the request if it doesn't comply with set policies or if it involves access to unsecured or restricted sites. If the request is approved, the proxy server connects to the relevant external server on the Internet, retrieves the requested data, and forwards it back to the user.

Proxy servers can serve several roles, including:

Organizations often use proxy servers to ensure that Internet usage complies with their policies and to protect their networks from unwanted or harmful traffic. Additionally, proxies are used to control and log internet usage, thereby aiding in oversight and compliance.