Network security courses can help you learn about firewalls, intrusion detection systems, and encryption protocols. You can build skills in risk assessment, incident response, and vulnerability management. Many courses introduce tools like Wireshark for network analysis, Nessus for vulnerability scanning, and various security information and event management (SIEM) systems, showing how these skills are applied in practical work to protect networks from cyber threats.

Packt
Skills you'll gain: Threat Management, Vulnerability Assessments, Incident Response, Computer Security Incident Management, Vulnerability Management, Threat Detection, Cyber Security Assessment, Cyber Threat Intelligence, Risk Mitigation, Security Management, Security Strategy, Infrastructure Security, Digital Forensics
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Virtual Networking, Enterprise Architecture, Virtualization, Network Architecture, Network Planning And Design, Virtual Private Networks (VPN), Computer Networking, Virtual Machines, Network Infrastructure, Wide Area Networks, Software-Defined Networking, Wireless Networks, Local Area Networks, Network Switches, Network Routers, Network Protocols
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Generative Adversarial Networks (GANs), Anomaly Detection, AI Security, Generative AI, Fraud detection, Intrusion Detection and Prevention, Model Evaluation, Malware Protection, Cyber Threat Hunting, Cybersecurity, Threat Detection, Cyber Threat Intelligence, Feature Engineering, Network Analysis, Cyber Attacks, Cyber Security Strategy, Applied Machine Learning, Email Security, Network Security, Jupyter
Intermediate · Specialization · 3 - 6 Months

Macquarie University
Skills you'll gain: Data Security, Cyber Risk, Cybersecurity, Data Sharing, Cyber Attacks, Security Management, Cryptography, Security Software, Security Strategy, Network Security, Risk Modeling, Data Access, Statistical Methods
Beginner · Course · 1 - 3 Months

Macquarie University
Skills you'll gain: AI Security, Responsible AI, DevSecOps, Cryptography, Network Security, Secure Coding, Application Security, Encryption, IT Security Architecture, Advanced Encryption Standard (AES), Cybersecurity, Cyber Security Strategy, Key Management, CI/CD, Cloud Security, Software Development, Security Awareness, Artificial Intelligence and Machine Learning (AI/ML), Security Controls, Software Architecture
Beginner · Specialization · 3 - 6 Months

Packt
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Application Security, Data Security, Cybersecurity, Cyber Attacks, Web Applications, Threat Detection, Security Awareness, Vulnerability Management, Encryption, Authentications, Authorization (Computing), PHP (Scripting Language)
Beginner · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Security Controls, Cybersecurity, Encryption, Cyber Attacks, Information Systems Security, Threat Management, Vulnerability Assessments, Vulnerability, Cyber Security Assessment, Vulnerability Scanning, Threat Detection, Cloud Security, Asset Protection, Security Awareness, Gap Analysis
Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Security Strategy, Cyber Governance, Security Management, Cyber Risk, Compliance Management, Risk Management, Regulatory Compliance, Cyber Security Policies, Cybersecurity, Law, Regulation, and Compliance, Cyber Security Strategy, Governance, NIST 800-53, Security Controls, Procedure Development, Data Governance, Program Standards, Computer Security
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: TCP/IP, OSI Models, General Networking, Computing Platforms, Network Administration, Software-Defined Networking, Computer Networking, Network Routing, Network Engineering, Network Infrastructure, Scripting, Network Protocols, Restful API, Application Programming Interface (API)
Intermediate · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Network Performance Management, Wide Area Networks, TCP/IP, Network Routing, Network Monitoring, Network Administration, Network Infrastructure, Network Protocols, Telecommunications, Service Level, System Configuration
Beginner · Course · 1 - 3 Months

University of California, Davis
Skills you'll gain: Threat Modeling, Secure Coding, Cryptography, Open Web Application Security Project (OWASP), Encryption, Application Security, Vulnerability Assessments, Data Security, Exploitation techniques, Security Controls, Authentications, Vulnerability Management, Personally Identifiable Information
Intermediate · Course · 1 - 4 Weeks

Macquarie University
Skills you'll gain: Cyber Risk, Security Awareness, Cyber Attacks, Mobile Security, Cybersecurity, Cyber Security Assessment, Cyber Security Policies, Data Security, Cyber Threat Hunting, Email Security, Authentications, Security Management, Security Strategy
Beginner · Course · 1 - 4 Weeks