What is Network Security? | UpGuard

## Executive Summary This article provides a broad primer on network security, outlining fundamental concepts (authentication, protection/detection/reaction), a comprehensive list of defensive controls and tools (firewalls, IDS/IPS, endpoint security, DLP, VPNs, NAC, segmentation, SIEM, honeypots), cloud-related risks and vendor management, and career/certification guidance, while also promoting UpGuard's monitoring and third-party risk products.