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.

École Polytechnique
Skills you'll gain: Energy and Utilities, Climate Change Mitigation, Electrical Power, Climate Change Programs, Hydrology, Electric Power Systems, Time Series Analysis and Forecasting, Water Resource Management, Predictive Modeling, Environment, Estimation, Hydraulics, Mathematical Modeling, Systems Of Measurement, Physical Science
★ 4.6 (152) · Intermediate · Course · 1 - 3 Months

The State University of New York
Skills you'll gain: Emergency Response, Mitigation, Safety and Security, Health Disparities, Hazard Communication (HazCom), Risk Management, Social Determinants Of Health, Community Health, Media and Communications, Public Health, Risk Analysis, Vulnerability, Community Outreach, Persuasive Communication
★ 4.7 (232) · Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Amazon Web Services, Cloud Infrastructure, Amazon Elastic Compute Cloud, Cloud Computing Architecture, Infrastructure Architecture, Cloud Computing, Cloud Hosting, Cloud Solutions, Cloud Services, Infrastructure As A Service (IaaS), Cloud Deployment, Cloud Storage, Load Balancing, Virtual Networking, Virtual Private Networks (VPN), Network Security, Resource Management, Cost Management
★ 4.5 (36) · Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Systems Development, Systems Development Life Cycle, Agile Methodology, Software Development Life Cycle, Productivity Software, Risk Management Framework, Agile Project Management, Data Security, Software Design, Systems Design, Risk Management, Software Development Methodologies, Information Technology, Information Systems, Project Risk Management, Systems Analysis, Computer Systems, Enterprise Risk Management (ERM), Business Systems Analysis, Microsoft Excel
★ 4.7 (43) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Security Architecture Review, Investigation, Cyber Security Assessment, IT Security Architecture, Failure Analysis, Root Cause Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, Software-Defined Networking, Wide Area Networks, Virtual Networking, Network Troubleshooting, Open Shortest Path First (OSPF), Network Routing, Network Architecture, Network Monitoring, Network Planning And Design, Virtual Private Networks (VPN), Border Gateway Protocol, Network Performance Management, Network Security, Network Administration, Network Engineering, Firewall, Amazon Web Services, Cloud Services, Network Infrastructure
★ 5 (7) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Field-Programmable Gate Array (FPGA), Hardware Design, Serial Peripheral Interface, Electronic Hardware, Internet Of Things, Embedded Systems, Electronic Systems, Network Protocols, Control Systems, Communication Systems, Digital Communications, Hardware Architecture, Software Development Tools, System Design and Implementation, Engineering, Scientific, and Technical Instruments, Simulation and Simulation Software, Software Installation, System Configuration, Real Time Data
★ 4.4 (23) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Security Strategy
★ 4.4 (7) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Key Performance Indicators (KPIs), Dashboard, Stakeholder Communications, Data Storytelling, Microsoft Outlook, Dashboard Creation, Performance Measurement, Email Marketing, Google Analytics, Business Intelligence, Data-Driven Marketing, Stakeholder Management, Stakeholder Engagement, Content Performance Analysis, Performance Metric, Performance Reporting, A/B Testing, Campaign Management, Strategic Planning, Data Visualization
Intermediate · Specialization · 3 - 6 Months

Infosec
Skills you'll gain: File Systems, Digital Forensics, Microsoft Windows, File Management, Operating Systems, Data Structures, Data Validation, Data Storage Technologies, Data Storage, Computer Hardware, Digital Analysis
★ 4.7 (89) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Data-Driven Marketing, Google Ads, Google Analytics, Marketing Analytics, Data Integration, Web Analytics, Data Access
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Secure Coding, C and C++, Application Security, Computer Programming Tools, System Programming, C++ (Programming Language), Software Development Tools, Exploit development, C (Programming Language), Security Software, Debugging, Security Engineering, Security Testing, Interoperability, Unix, Embedded Software, Information Systems Security, OS Process Management, Embedded Systems, Programming Principles
★ 2.7 (36) · Intermediate · Specialization · 3 - 6 Months