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: AI Security, Threat Modeling, Open Web Application Security Project (OWASP), Security Testing, Retrieval-Augmented Generation, Software Architecture, API Design, Test Automation, Vulnerability Management, Agentic systems, Systems Design, Model Evaluation, Test Driven Development (TDD), CI/CD, Python Programming, Continuous Deployment, Dependency Analysis, Large Language Modeling, Machine Learning, Performance Analysis
Intermediate · Specialization · 3 - 6 Months

Pragmatic AI Labs
Skills you'll gain: GitHub, Authentications, Authorization (Computing), Role-Based Access Control (RBAC), Security Controls, Data Security, Identity and Access Management, Enterprise Application Management, Multi-Factor Authentication, Security Management, Security Engineering, Version Control, Systems Administration, Collaborative Software
Beginner · Course · 1 - 4 Weeks

Total Seminars
Skills you'll gain: Incident Response, Security Management, Computer Security Incident Management, Business Continuity Planning, Incident Management, Compliance Management, Business Continuity, Enterprise Security, Digital Forensics, Governance Risk Management and Compliance, Regulatory Compliance, Cyber Governance, Disaster Recovery, Risk Management, Computer Security, Security Software, Change Management, Security Testing, Security Awareness, Automation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cloud Computing Architecture, Cloud Security, Cloud Deployment, Cloud Computing, Incident Response, IT Security Architecture, Cloud Infrastructure, Cloud Solutions, Incident Management, Cloud Standards, Capacity Management, Application Security, Security Controls, Network Security, Data Security, Hardening, Scalability, Emerging Technologies, Identity and Access Management
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Windows Servers, Computer Security, Linux Administration, Disaster Recovery, Authorization (Computing), Linux, Linux Servers, Microsoft Windows, Authentications, Operating System Administration, OSI Models, User Accounts, Group Policy, Security Management, Ubuntu, System Monitoring, Cyber Security Policies, IT Management, Systems Administration, Cybersecurity
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Microsoft Azure, Identity and Access Management, Network Security, Cloud Management, Cloud Security, Security Management, Data Storage, Security Information and Event Management (SIEM), Firewall, Role-Based Access Control (RBAC), Security Controls, Continuous Monitoring, Key Management, Computer Security Incident Management, Incident Response, Threat Detection, Virtual Machines, Incident Management
Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Secure Coding, Application Security, Exploitation techniques, Web Applications, Javascript, Web Development, Node.JS, Java Programming
Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Application Security, Serverless Computing, Secure Coding, Risk Management Framework, Cloud Security, Threat Management, Infrastructure Security, Cloud Services, Cloud Platforms, Javascript, Node.JS
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Preprocessing, Deep Learning, Data Processing, Artificial Neural Networks, Logistic Regression, Applied Machine Learning, Program Development, Python Programming, Network Architecture, Model Training, Model Optimization, Machine Learning Algorithms, NumPy, Pandas (Python Package), Linear Algebra
Beginner · Course · 1 - 3 Months

Total Seminars
Skills you'll gain: Security Controls, Authentications, Cryptographic Protocols, Risk Management Framework, Cybersecurity, Cryptography, Security Management, Computer Security, Threat Modeling, Cyber Attacks, Data Security, Cyber Security Assessment, Encryption, Threat Management, Threat Detection, Cyber Risk, Cyber Threat Intelligence, Security Awareness, Cyber Threat Hunting, Vulnerability Assessments
Intermediate · Course · 1 - 3 Months
Skills you'll gain: Computer Security Incident Management, Incident Management, Incident Response, Security Management, Threat Management, Security Strategy, Event Monitoring, Security Information and Event Management (SIEM), Enterprise Security, IT Automation, Automation, Systems Integration
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Security Assessment, Security Testing, Vulnerability Assessments, Penetration Testing, Vulnerability Management, Security Controls
Intermediate · Course · 1 - 4 Weeks