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.

EC-Council
Skills you'll gain: Cryptography, Encryption, Systems Development Life Cycle, Human Factors (Security), Threat Management, Systems Development, Security Management, Security Awareness, Cybersecurity, Cyber Attacks, Computer Security Awareness Training, Cyber Security Policies, ISO/IEC 27001, Data Security, Security Controls, Network Security, Risk Management Framework, Cyber Risk
Beginner · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Network Performance Management, Wireless Networks, Network Infrastructure, Wide Area Networks, Network Planning And Design, Software-Defined Data Center (SDDC), Local Area Networks, Network Protocols, Software-Defined Networking, Computer Networking, Service Level, Telecommunications
Beginner · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Application Security, Data Security, Cybersecurity, Cyber Attacks, Cyber Security Assessment, Web Applications, Threat Management, Security Awareness, Vulnerability Management, Encryption, Authentications, Authorization (Computing), PHP (Scripting Language)
Beginner · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Cloud Infrastructure, Cloud Management, Cloud Computing, Network Performance Management, Network Monitoring, Google Cloud Platform, Virtual Networking, Command-Line Interface, Virtual Machines, Virtual Private Networks (VPN), Performance Testing
Beginner · Project · Less Than 2 Hours

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

University of Colorado System
Skills you'll gain: Open Web Application Security Project (OWASP), Penetration Testing, Metasploit, Security Testing, Security Strategy, Vulnerability Assessments, Cyber Security Assessment, Security Management, Vulnerability Scanning, Cyber Threat Intelligence, Information Systems Security, Exploitation techniques, Security Controls, Data Sharing
Beginner · Course · 1 - 3 Months

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

LearnKartS
Skills you'll gain: Security Controls, Cybersecurity, Encryption, Cyber Attacks, Information Systems Security, Cryptographic Protocols, Threat Management, Vulnerability Assessments, Vulnerability, Cyber Security Assessment, Vulnerability Scanning, Threat Detection, Cloud Security, Key Management, Asset Protection, Security Awareness, Gap Analysis
Beginner · Course · 1 - 4 Weeks

Macquarie University
Skills you'll gain: Cyber Risk, Security Awareness, Cyber Attacks, Mobile Security, Cybersecurity, Cyber Security Assessment, Cyber Security Policies, Cyber Threat Hunting, Data Security, Security Strategy, Email Security, Authentications, Security Management
Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Network Architecture, Network Planning And Design, Virtual Networking, Network Infrastructure, Google Cloud Platform, General Networking, Network Routing, Computer Networking, Cloud Infrastructure, Network Security, Network Troubleshooting, Security Requirements Analysis, Network Model, Network Analysis, Firewall, Load Balancing, Hybrid Cloud Computing, Scalability
Intermediate · Course · 1 - 4 Weeks

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

Macquarie University
Skills you'll gain: Cyber Governance, Safety Culture, Cyber Risk, Security Awareness, Human Factors (Security), Cyber Attacks, Dashboard, Computer Security Awareness Training, Cyber Threat Intelligence, Mobile Security, Cyber Security Strategy, Business Metrics, Cybersecurity, Cyber Operations, Strategic Leadership, Leadership and Management, Leadership, Leadership Development, Organizational Leadership, Team Leadership
Beginner · Specialization · 3 - 6 Months