Network security is a subset of cybersecurity that focuses on protecting the integrity and availability of networks and the information that is transmitted over them. It involves implementing a variety of measures to protect against unauthorized access, use, disclosure, disruption, modification, or destruction of network resources and the information that is transmitted over them. This can include measures such as firewalls, intrusion detection and prevention systems, virtual private networks (VPNs), and encryption. Network security also involves monitoring and maintaining the security of network devices and infrastructure, such as routers, switches, and servers, as well as implementing security policies and procedures to ensure compliance with industry standards and regulations.