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.

Infosec
Skills you'll gain: Authentications, Cryptography, Application Security, Web Applications, Javascript, Identity and Access Management, Node.JS, Browser Compatibility
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Incident Response, Computer Security Incident Management, Cyber Threat Intelligence, Intrusion Detection and Prevention, Anomaly Detection, Cyber Security Strategy, Threat Detection, Network Analysis, Network Security, Network Monitoring, NIST 800-53, Cloud Security
Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Application Security, Secure Coding, Security Testing, Security Software, Vulnerability Scanning, Security Controls, Security Awareness, Web Development Tools, Web Applications, Browser Compatibility, Computer Programming
Beginner · Course · 1 - 4 Weeks

Macquarie University
Skills you'll gain: DevSecOps, Secure Coding, Cloud-Native Computing, Software Architecture, Security Engineering, Software Design, Microsoft Azure, Cybersecurity, DevOps, Kubernetes, Infrastructure as Code (IaC), Web Applications, Azure DevOps, Containerization, API Design, Docker (Software), Software Engineering, Role-Based Access Control (RBAC), Dependency Analysis, Git (Version Control System)
Beginner · Course · 1 - 3 Months

University of Minnesota
Skills you'll gain: Cloud Security, Data Security, Cloud Services, Cloud Storage, Personally Identifiable Information, General Data Protection Regulation (GDPR), Information Privacy, Data Governance, Data Integrity, Cloud Platforms, Security Controls, Health Insurance Portability And Accountability Act (HIPAA) Compliance, Relational Databases, Encryption, SQL
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Dynamic Host Configuration Protocol (DHCP), Virtual Local Area Network (VLAN), Network Administration, System Configuration, TCP/IP, Computer Networking, General Networking, Virtual Environment, Network Switches, Network Routers, Networking Hardware, Network Engineering, Simulations, Configuration Management, Information Technology, Verification And Validation
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: PyTorch (Machine Learning Library), Artificial Neural Networks, Image Analysis, Deep Learning, Computer Vision
Advanced · Guided Project · Less Than 2 Hours

Packt
Skills you'll gain: Security Testing, Cybersecurity, Network Security, TCP/IP, Network Monitoring, Vulnerability Assessments, Servers, Network Analysis, Network Protocols, Exploitation techniques, Scripting
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Software Testing, Open Web Application Security Project (OWASP), Business Logic, Development Testing, Secure Coding, Cryptography, Cybersecurity, Test Case, Identity and Access Management, Authentications, Vulnerability Assessments, Data Validation, Network Protocols, Authorization (Computing), Web Applications
Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Microsoft Azure, Threat Modeling, Cloud Security, Continuous Monitoring, System Monitoring, Security Information and Event Management (SIEM), Security Management, Threat Detection, Application Performance Management, Event Monitoring, Vulnerability Management, Incident Response, Query Languages
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Network Troubleshooting, Linux, Kubernetes, Network Architecture, Network Administration, Computer Networking, Docker (Software), TCP/IP, Network Routers, Software-Defined Networking, Network Routing, Containerization, Virtual Private Networks (VPN), Network Model, Network Switches, Virtualization, Firewall, Network Protocols
Build toward a degree
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: AWS Identity and Access Management (IAM), Amazon Web Services, Amazon Elastic Compute Cloud, Cloud Computing, Cloud Security, Load Balancing, User Accounts, Apache, Web Servers, System Configuration, Command-Line Interface, Firewall, Linux, Debugging
Beginner · Course · 1 - 4 Weeks