What is the function of a proxy server?

A proxy server functions primarily as an intermediary between a client and the internet. When a client makes a request to access a specific resource on the internet, the request is routed through the proxy server. The proxy then forwards this request to the appropriate server, retrieves the data, and sends it back to the client. This setup allows for several benefits, including improved security, content filtering, and anonymity, as the client’s original IP address can be masked.

Using a proxy can also help in managing network traffic by consolidating requests, thereby reducing bandwidth usage and increasing speed. However, the main function that distinguishes a proxy server from other network devices is its role as an intermediary. This capability allows it to facilitate various functions, such as caching data to speed up retrieval times and enforcing access policies. Through this intermediary role, proxy servers can enhance performance while providing additional privacy and security measures for client requests.