Network Perimeter Defense (NPD) is a defense system designed to protect a network from external attacks. NPD systems are typically deployed at the edge of a network, and they use a variety of techniques to detect and block unauthorized access attempts. NPD systems can be hardware-based, software-based, or a combination of both.
NPD systems are an important part of a comprehensive network security strategy. They can help to protect networks from a variety of threats, including:unordered list