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.

Cisco Learning and Certifications
Skills you'll gain: Network Security, Network Architecture, Network Protocols, Network Performance Management, Network Monitoring, Role-Based Access Control (RBAC), Network Troubleshooting, Network Administration, OSI Models, Network Planning And Design, Virtual Local Area Network (VLAN), Cybersecurity, Routing Protocols, Computer Networking, Firewall, Network Routing, Network Analysis, IT Infrastructure, Cloud Computing, Automation
★ 4.7 (40) · Beginner · Specialization · 3 - 6 Months

Erasmus University Rotterdam
Skills you'll gain: Security Management, Threat Management, Intelligence Collection and Analysis, International Relations, Public Safety and National Security, Safety and Security, Risk Management, Cybersecurity, Economics, Policy, and Social Studies
★ 4.7 (1.3K) · Beginner · Course · 1 - 3 Months

EC-Council
Skills you'll gain: Digital Forensics, Network Security, Incident Response, Cryptography, Penetration Testing, Vulnerability Management, Cybersecurity, Application Security, Cyber Security Policies, Security Information and Event Management (SIEM), Threat Detection, Network Monitoring, Cloud Security, Vulnerability Assessments, Malware Protection, Mobile Security, Identity and Access Management, Internet Of Things, Risk Analysis, Web Applications
★ 4.9 (48) · Beginner · Professional Certificate · 3 - 6 Months

Macquarie University
Skills you'll gain: Security Testing, Cyber Threat Intelligence, Cyber Risk, AI Integrations, Cyber Attacks, Cyber Security Assessment, Cybersecurity, Security Controls, Threat Modeling, Security Strategy, Data Ethics, Security Engineering, Threat Detection, Data Governance, Data Security, Exploitation techniques, Security Management, Information Privacy, Emerging Technologies, Model Evaluation
★ 4.7 (33) · Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Secure Coding, Authentications, Authorization (Computing), AI Integrations, Microsoft Copilot, Application Security, Data Validation, Web Applications, Data Security, Data Integrity
★ 4.9 (24) · Beginner · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Key Management, Security Management, Cyber Attacks, Cryptography, Cyber Security Policies, Cybersecurity, Encryption, Cyber Risk, ISO/IEC 27001, Threat Management, Risk Management Framework, Security Controls, Data Integrity
★ 4.7 (326) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Management, Cloud Security, Application Security, Open Web Application Security Project (OWASP), Cloud Computing, Cloud Infrastructure, Cloud Applications, Identity and Access Management, Data Integrity, Secure Coding, DevSecOps, Security Awareness, Cloud Computing Architecture, Data Centers, Data Management, IT Security Architecture, General Data Protection Regulation (GDPR), Security Engineering, Cyber Risk, Service Level
★ 4.6 (14) · Advanced · Specialization · 1 - 3 Months

Skills you'll gain: Cloud Computing Architecture, Cloud Security, Cloud Infrastructure, Cloud Computing, Cloud Standards, Cloud Applications, Cloud Platforms, IT Security Architecture, Cloud Services, Cloud Technologies, Infrastructure Security, Cloud Management, Application Security, Data Security, Cybersecurity, Security Controls, Data Integrity, Computer Science, Risk Management Framework, Information Technology
★ 4.7 (354) · Intermediate · Course · 1 - 3 Months
Skills you'll gain: Security Management, Cyber Attacks, Threat Management, Cybersecurity, Cyber Risk, Risk Management Framework, Risk Management, Incident Response, Vulnerability Management, Risk Mitigation, Security Information and Event Management (SIEM), Security Controls, Computer Security, Enterprise Security, Risk Analysis, Information Assurance, Open Web Application Security Project (OWASP), Asset Protection, Event Monitoring, System Monitoring
★ 4.8 (11K) · Beginner · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Incident Response, Security Information and Event Management (SIEM), Event Monitoring, Computer Security Incident Management, Security Management, Cyber Operations, DevSecOps, System Monitoring, Cybersecurity, Cyber Threat Intelligence, Threat Management, Incident Management, Threat Detection, Continuous Monitoring, Security Strategy, Cloud Deployment, Stakeholder Engagement, Network Security, Cyber Threat Hunting, Cloud-Native Computing
★ 4.8 (372) · Mixed · Course · 1 - 3 Months

Infosec
Skills you'll gain: Responsible AI, AI Security, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), Governance, Cyber Governance, Law, Regulation, and Compliance, Information Privacy, Regulation and Legal Compliance, Data Governance, Data Security, Machine Learning, Computer Security, Risk Management Framework
★ 4.6 (296) · Beginner · Course · 1 - 3 Months

NVIDIA
Skills you'll gain: OSI Models, TCP/IP, Data Centers, Network Protocols, Network Infrastructure, Local Area Networks, Network Architecture, General Networking, Networking Hardware, Network Planning And Design, Computer Networking, Network Switches, Network Routing, Network Model
★ 4.6 (708) · Beginner · Course · 1 - 4 Weeks