Network security is an essential practice in today's digital landscape. The increasing number of cyber threats and vulnerabilities makes safeguarding data, devices, and networks imperative. CompTIA is one of the most widely recognized certifications in computer networking and security. In this article, we will explore the importance of network security, the CompTIA certification program, common threats and vulnerabilities, risk mitigation strategies, wireless network security, malware, firewalls, intrusion detection and prevention systems, access control, and authentication management, and incident response and disaster recovery planning.