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.

Coursera
Skills you'll gain: Simulations, Risk Modeling, Risk Analysis, Simulation and Simulation Software, Risk Management, Financial Forecasting, Return On Investment, Data Analysis, Financial Modeling, Analysis, Microsoft Excel, Data-Driven Decision-Making, Probability Distribution, Business Modeling
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Reinforcement Learning, Decision Intelligence, Responsible AI, Agentic systems, Data Ethics, Artificial Intelligence, Machine Learning Methods, Distributed Computing, AI Security, Model Training
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Professional Development, Human Resources, Human Resources Management and Planning, HR Tech, Human Resource Strategy, Culture Transformation, Organizational Change, Leadership Development, Organizational Development, Professional Networking, Lifelong Learning, Innovation, Case Studies, Change Management, Time Management, Learning Strategies, Branding, Analysis
★ 4.4 (30) · Intermediate · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: Application Security, IT Security Architecture, Operating Systems, Computer Security, Security Controls, Database Application, Linux, Security Requirements Analysis, Information Systems Security, Security Engineering, Secure Coding, Virtualization, Virtual Machines, Systems Development
★ 3.7 (13) · Intermediate · Course · 3 - 6 Months

Coursera
Skills you'll gain: Looker (Software), Customer Retention, Customer Analysis, Digital Analysis, Customer Insights, Marketing Analytics, Driving engagement, Data-Driven Marketing, Trend Analysis, Data Analysis, Performance Metric, Consumer Behaviour, Analysis, Growth Strategies, Time Series Analysis and Forecasting, Root Cause Analysis, Marketing Channel, Forecasting
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Security Assessment, Endpoint Security, Information Technology, Data Security, Network Security, Cloud Security, Personally Identifiable Information, Information Privacy, Linux Administration, Firewall, Cybersecurity, Linux, Network Administration, System Configuration, Security Controls, Cyber Threat Intelligence, Cyber Security Policies, Cyber Security Strategy, Microsoft Windows, Good Clinical Practices (GCP)
Beginner · Course · 3 - 6 Months

LearnKartS
Skills you'll gain: Jenkins, Infrastructure as Code (IaC), CI/CD, Ansible, Build Tools, SonarQube, Continuous Integration, DevOps, Apache Tomcat, Devops Tools, Apache Maven, Continuous Deployment, Continuous Delivery, Configuration Management, Software Configuration Management, Code Coverage, Shell Script, Application Deployment, Unix Shell, Docker (Software)
★ 3.8 (51) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Cyber Operations, Threat Management, Threat Detection, Cybersecurity, Exploitation techniques, Scripting, IT Automation, Python Programming, Scripting Languages
★ 4.7 (41) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Human Machine Interfaces, Network Protocols, Communication Systems, System Configuration, Remote Access Systems, Automation, Web Servers, Scripting, System Monitoring, Systems Integration, Authorization (Computing), Algorithms, Data Structures
Advanced · Course · 3 - 6 Months

LearnQuest
Skills you'll gain: Teradata SQL, SQL, Data Store, Database Design, Database Management, Relational Databases, Query Languages, Data Analysis
Intermediate · Course · 1 - 4 Weeks

Association of International Certified Professional Accountants
Skills you'll gain: Key Management, Blockchain, Digital Assets, Public Key Infrastructure, FinTech, Emerging Technologies, Cryptography, Distributed Computing, Transaction Processing
★ 4.7 (135) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Kubernetes, Docker (Software), Network Troubleshooting, Containerization, Cloud Infrastructure, Application Deployment, Scalability, Virtual Networking, Role-Based Access Control (RBAC), Network Monitoring, System Monitoring, Configuration Management, Software Installation, Data Persistence
★ 3.2 (12) · Intermediate · Course · 1 - 3 Months