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.

University of Colorado Boulder
Skills you'll gain: Network Analysis, Social Network Analysis, Network Model, Marketing Analytics, Social Media Analytics, Statistical Methods, Text Mining, Data Structures, JSON, Data Visualization Software, Data Processing, Python Programming, Feature Engineering
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

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

Coursera
Skills you'll gain: Security Controls, Multi-Factor Authentication, Security Management, Authorization (Computing), User Accounts, Content Management Systems, User Provisioning, Identity and Access Management, Data Security, Authentications, Data Management, Data Access, IT Security Architecture, Encryption
Intermediate · Course · 3 - 6 Months

Coursera
Skills you'll gain: Security Controls, Vulnerability Scanning, ISO/IEC 27001, Penetration Testing, Vulnerability Assessments, Security Information and Event Management (SIEM), Data Security, Compliance Auditing, Security Assertion Markup Language (SAML), Risk Management Framework, Computer Security Incident Management, Multi-Factor Authentication, Authentications, Computer Security Awareness Training, Single Sign-On (SSO), Event Monitoring, Authorization (Computing), Encryption, Advanced Encryption Standard (AES), End User Training and Support
Intermediate · Course · 1 - 4 Weeks

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
Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: TCP/IP, OSI Models, General Networking, Networking Hardware, Computing Platforms, IT Automation, Network Administration, Network Model, Computer Networking, Network Engineering, Network Infrastructure, Scripting, Network Protocols, Restful API, Application Programming Interface (API)
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Threat Management, Vulnerability Assessments, Incident Response, Incident Management, Computer Security Incident Management, Vulnerability Management, Threat Detection, Cyber Security Assessment, Risk Mitigation, Security Management, Security Strategy, Digital Forensics
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Incident Response, Network Security, Intrusion Detection and Prevention, Command-Line Interface, Cryptography, Cyber Security Strategy, Open Web Application Security Project (OWASP), Application Security, Secure Coding, Cybersecurity, IT Security Architecture, Encryption, Information Systems Security, Vulnerability Assessments, Cyber Attacks, Risk Management Framework, Multi-Factor Authentication, Cloud Security, Penetration Testing, Risk Management
Intermediate · Specialization · 3 - 6 Months
Starweaver
Skills you'll gain: Terraform, AI Security, DevSecOps, Infrastructure as Code (IaC), Amazon Web Services, AWS CloudFormation, Amazon Elastic Compute Cloud, Cloud Security, Cloud Deployment, Firewall, Cloud Infrastructure, LLM Application, Application Deployment, Cloud Computing Architecture, Flask (Web Framework), Load Balancing, Analysis
Advanced · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Generative Adversarial Networks (GANs), Anomaly Detection, AI Security, Fraud detection, Model Evaluation, Malware Protection, Cybersecurity, Threat Detection, Feature Engineering, Network Analysis, Cyber Attacks, Cyber Security Strategy, Classification Algorithms, Email Security, Network Security, Jupyter, Authentications, Machine Learning Methods, Machine Learning Algorithms, Artificial Intelligence
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Virtualization and Virtual Machines, Virtualization, Hardware Troubleshooting, Network Troubleshooting, Computer Hardware, Cloud Computing, Technical Support and Services, Technical Support, General Networking, End User Training and Support, System Support, Peripheral Devices, Networking Hardware, System Configuration, Data Storage, Network Administration, Network Infrastructure, Information Technology, Hardware Architecture, Configuration Management
Advanced · Course · 1 - 3 Months

Skills you'll gain: Cyber Security Assessment, Cybersecurity, Simulations, Scenario Testing, Security Testing, Security Controls, Vulnerability Management, Incident Response
Intermediate · Course · 1 - 4 Weeks