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.

Google Cloud
Skills you'll gain: Apache, Event Monitoring, Network Monitoring, Data Import/Export, Web Servers, Virtual Networking, Servers, Network Analysis
Intermediate · Project · Less Than 2 Hours

Infosec
Skills you'll gain: Application Security, Secure Coding, Security Software, Vulnerability Scanning, Security Controls, Intrusion Detection and Prevention, Security Awareness, Web Applications, PHP (Scripting Language), Application Frameworks, Browser Compatibility, Computer Programming
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Computer Networking, Network Troubleshooting, Network Administration, TCP/IP, General Networking, Network Architecture, Routing Protocols, Network Protocols, Networking Hardware, OSI Models, Network Routers, Network Routing, Network Infrastructure, Dynamic Host Configuration Protocol (DHCP), Network Security, Wireless Networks, Network Model, Data Integrity
Beginner · Course · 1 - 3 Months

Skills you'll gain: Threat Modeling, Data Loss Prevention, Mobile Security, DevSecOps, MLOps (Machine Learning Operations), Vulnerability Scanning, Model Optimization, Incident Response, LLM Application, Hardening, Application Security, Anomaly Detection, Responsible AI, Security Controls, Data Security, CI/CD, Infrastructure Security, Continuous Monitoring, Penetration Testing, Vulnerability Assessments
Intermediate · Specialization · 3 - 6 Months

John Wiley & Sons
Skills you'll gain: Cybersecurity, Security Awareness, Computer Security Awareness Training, Cyber Attacks, Cyber Risk, Cyber Security Strategy, Information Systems Security, Security Management, Security Controls, Data Security, Computer Security, Risk Mitigation, Security Strategy, Incident Response, Risk Management, Vulnerability Management, Malware Protection, Encryption, Authorization (Computing), Authentications
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Software Development Methodologies, Development Environment, Software Development, Application Programming Interface (API), Version Control, Software Design Patterns, JSON, Maintainability, Network Engineering, Software Development Tools, API Testing, Restful API, Data Import/Export, Git (Version Control System), Virtualization and Virtual Machines, Computer Programming Tools, Devops Tools, Extensible Languages and XML, YAML, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Open Web Application Security Project (OWASP), Cloud Security, Authentications, Key Management, Cloud Applications, Application Security, Cloud Development, Secure Coding, DevSecOps, Cloud Computing, Cloud Services, Identity and Access Management, Multi-Factor Authentication, Data Security, Cryptography, Cryptographic Protocols, Application Programming Interface (API), Web Servers, Transaction Processing, Server Side
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: LinkedIn, Professional Networking, Web Presence, Relationship Building, Professional Development, General Networking, Professionalism
Beginner · Guided Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Enterprise Risk Management (ERM), Cyber Governance, Business Risk Management, Security Management, Security Strategy, Governance, Governance Risk Management and Compliance, Law, Regulation, and Compliance, Risk Management, Compliance Management, Risk Management Framework, Regulatory Compliance, Strategic Planning, Security Controls, Policy Development, Contract Compliance, Business Continuity Planning, Performance Measurement, Stakeholder Management, Business Development
Mixed · Course · 1 - 3 Months

Whizlabs
Skills you'll gain: AWS Identity and Access Management (IAM), Identity and Access Management, Amazon Web Services, Cloud Security, Key Management, Authentications, Data Security, Authorization (Computing), Application Security, User Provisioning, Amazon S3, Distributed Denial-Of-Service (DDoS) Attacks, Role-Based Access Control (RBAC), Encryption, Threat Detection, Continuous Monitoring, Single Sign-On (SSO), User Accounts, Vulnerability Assessments, Data Loss Prevention
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Event Monitoring, Security Strategy, General Networking, Network Architecture, Systems Integration, Incident Response, Data Integration, Threat Management, Cybersecurity, Security Management, Networking Hardware, Information Technology, Computer Networking, Network Security, Threat Detection, Cyber Security Policies, Data Governance, Data Management, Command-Line Interface, Application Deployment
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: vSphere Networking and Storage, vCenter Server Management, VMware vSAN, vCenter Server, Virtual Networking, iSCSI Configuration, vSphere DRS & HA, Virtual Machines, Network Monitoring, Network Performance Management, Data Storage Technologies, Network Security, Data Storage, Network Switches, File Systems, Data Store, Role-Based Access Control (RBAC)
Intermediate · Course · 1 - 4 Weeks