internal web proxy server

A network security control — specifically a forward-facing intermediary server — deployed within an organization's own network perimeter to mediate, authenticate, inspect, and constrain all outbound HTTP/HTTPS requests made by internal clients to external destinations on the internet. It acts as an intermediary for clients requesting resources from other servers, with client requests evaluated at the proxy to manage complexity and limit direct connectivity. In compliance frameworks it is referenced as the point from which outbound internet traffic is legitimately sourced, and as a mechanism for limiting information transfers between organizations. It functions as a centralized control point for security policy enforcement at the network boundary, implementing content filtering and URL categorization with policy-based blocking — a role formalized in guidance such as CIS Control 12.

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