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: Incident Response, Disaster Recovery, Incident Management, Security Management, Cyber Operations, Business Continuity Planning, Safety and Security, Change Control, Threat Management, Security Information and Event Management (SIEM), Patch Management, Security Controls, Cybersecurity, Threat Detection, Intrusion Detection and Prevention, Hardening, Configuration Management, Continuous Monitoring, Vulnerability Management
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Data Security, Data Loss Prevention, Security Management, Data Management, Security Controls, Personally Identifiable Information, Information Systems Security, Data Governance, Information Management, Encryption, Identity and Access Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Network Routing, Network Architecture, Hybrid Cloud Computing, Network Planning And Design, Amazon Web Services, Virtual Private Networks (VPN), Cloud Computing Architecture, Wide Area Networks, Network Infrastructure, Network Performance Management, Network Security, Cloud Infrastructure, Network Analysis, Operations Management
Intermediate · Course · 1 - 4 Weeks

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

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

LearnQuest
Skills you'll gain: Network Architecture, Network Protocols, Wireless Networks, Network Performance Management, Network Planning And Design, Network Infrastructure, Communication Systems, Telecommunications, Emerging Technologies
Intermediate · Course · 1 - 4 Weeks

Icahn School of Medicine at Mount Sinai
Skills you'll gain: Bioinformatics, Unsupervised Learning, Biostatistics, Machine Learning Algorithms, Biology, Data Processing, Statistical Methods, Systems Engineering, Unix Commands, Linux Commands
Intermediate · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Development Environment, Software Development Tools, Software Development Methodologies, CI/CD, DevOps, IT Automation, Version Control, Continuous Integration, Network Engineering, Network Architecture, Docker (Software), Software Development, Virtual Environment, Git (Version Control System), Waterfall Methodology, Agile Methodology, Software Design
Intermediate · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Social Network Analysis, Network Analysis, Social Sciences, Sociology, Agentic systems, Systems Thinking, Economics, Policy, and Social Studies, Simulations, Culture, Complex Problem Solving, Innovation
Beginner · Course · 1 - 3 Months

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

Cisco Learning and Certifications
Skills you'll gain: Postman API Platform, Restful API, Authentications, Application Programming Interface (API), JSON, Extensible Markup Language (XML), YAML, Network Monitoring, Automation, Network Engineering, Python Programming
Intermediate · Course · 1 - 4 Weeks

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