A security appliance that serves as a web proxy and sits between users and the Internet enforces web security. This appliance could be software installed in the user’s web browser, a device on-premises or the cloud, or both. However, the only thing that counts is that a worker’s computer is set up to route all Internet traffic through the web security system. Because it sits between a web user and the Internet, the web security solution can see and control a lot of the web traffic. At the application layer, all traffic passing through it can be checked for dangerous material or acts that

go against corporate policy. Any other traffic can e discarded, while authorized traffic can go to its destination.

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