COMPUTER FUNDAMENTALS

Detailed explanation-1: -An application-level gateway (ALG, also known as application layer gateway, application gateway, application proxy, or application-level proxy) is a security component that augments a firewall or NAT employed in a computer network.

Detailed explanation-2: -A proxy server, also known as a “proxy” or “application-level gateway", is a computer that acts as a gateway between a local network (for example, all the computers at one company or in one building) and a larger-scale network such as the internet.

Detailed explanation-3: -Definition(s): A firewall capability that combines lower-layer access control with upper layer-functionality, and includes a proxy agent that acts as an intermediary between two hosts that wish to communicate with each other.

Detailed explanation-4: -A proxy server is a system or router that provides a gateway between users and the internet. Therefore, it helps prevent cyber attackers from entering a private network. It is a server, referred to as an “intermediary” because it goes between end-users and the web pages they visit online.