What is a common use of a Proxy Server in network security?

A proxy server plays a significant role in network security, primarily by acting as an intermediary between users and the internet. In this capacity, one of its common uses is to block access to malicious web content. By filtering requests that pass through it, the proxy can prevent users from reaching sites known for distributing malware, phishing attacks, or other harmful content. This capability not only protects individual users but also secures the network as a whole by reducing the risk of infection and unauthorized access.

While a proxy server can have a variety of roles, such as facilitating VPN connections or monitoring TCP session traffic, the specific function of blocking harmful content directly aligns with its security purposes. This important feature helps organizations enforce internet usage policies and safeguard sensitive data by preventing exposure to threats lurking on the web.