A proxy server is an intermediary system that receives requests and forwards them on behalf of a client or service. It matters because proxies can shape visibility, policy enforcement, privacy, filtering, and traffic control in many network architectures.
What is a Proxy Server?
A proxy sits between a requester and a destination, handling traffic indirectly rather than allowing the requester to connect directly. Proxies may be used for filtering, anonymity, caching, security inspection, access control, protocol mediation, or traffic routing depending on the use case.
Different proxy types serve different roles, including forward proxies for users and reverse proxies for protecting or distributing access to applications.
What Proxy Servers Commonly Do
Common functions include request forwarding, traffic inspection, policy filtering, caching, content control, address hiding, access mediation, and logging of user or application requests.
Proxy Server vs. VPN
A proxy forwards selected traffic through an intermediary service. A VPN creates a more comprehensive encrypted tunnel for network traffic between endpoints. They solve different problems and are not interchangeable in all cases.
Frequently Asked Questions
Why do organizations use proxy servers?
They use them to enforce browsing policy, inspect traffic, improve performance in some cases, mediate access, hide origin systems, or add security control around application exposure.
Are proxy servers only for web browsing?
No. Proxies can be used for web traffic, APIs, application delivery, protocol mediation, and several other networking or security functions.
