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.

Skills you'll gain: Cyber Attacks, Infrastructure Security, Cloud Infrastructure
Beginner · Course · 1 - 3 Months

Skills you'll gain: Event Monitoring, OSI Models, Network Monitoring, Network Protocols, Cyber Threat Intelligence, Network Analysis, Network Troubleshooting, TCP/IP, Distributed Denial-Of-Service (DDoS) Attacks, Threat Detection, General Networking, Network Security, Incident Response, Command-Line Interface
Intermediate · Course · 1 - 3 Months

New York University
Skills you'll gain: Infrastructure Security, Cyber Security Strategy, Mobile Security, Enterprise Security, Cyber Risk, Cyber Security Policies, Cybersecurity, Cloud Security, NIST 800-53, Hybrid Cloud Computing, Security Awareness, Cloud Computing Architecture, Blockchain, Internet Of Things, Cryptography, Data Integrity
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, OSI Models, Distributed Denial-Of-Service (DDoS) Attacks, Firewall, TCP/IP, Network Administration, Wireless Networks, Network Protocols, General Networking, Intrusion Detection and Prevention, Local Area Networks, Network Routers, Security Controls, Mobile Security, Authentications, Authorization (Computing)
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cybersecurity, TCP/IP, Cyber Attacks, Endpoint Security, Infrastructure Security, Network Routing, Threat Detection, Computer Security, Firewall, Computer Networking, Wireless Networks, Cloud Computing, Information Technology Infrastructure Library, Technical Support and Services, Vulnerability Assessments
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Penetration Testing, Cybersecurity, Metasploit, Cyber Attacks, Application Security, Exploitation techniques, Network Security, Security Awareness, Malware Protection, Vulnerability Assessments, Javascript
Intermediate · Course · 1 - 3 Months

Royal Holloway, University of London
Skills you'll gain: Computer Security Incident Management, Linux, Network Security, Cyber Governance, IT Security Architecture, OSI Models, Incident Management, Incident Response, Security Management, Linux Commands, TCP/IP, Computer Systems, Threat Modeling, Command-Line Interface, Network Protocols, Computer Networking, Cybersecurity, Human Factors (Security), Cyber Threat Intelligence, Cyber Attacks
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Software-Defined Networking, Network Architecture, Network Planning And Design, Wide Area Networks, Virtual Private Networks (VPN), Network Administration, Network Security, Network Performance Management, Firewall, Cloud Deployment, Network Routing, Encryption
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Communication Systems
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Intrusion Detection and Prevention, Command-Line Interface, Cybersecurity, Information Systems Security, Local Area Networks, Firewall, Windows PowerShell, Hardening, Threat Detection, Linux, Penetration Testing, Network Architecture, Wireless Networks, Vulnerability Assessments, System Configuration, IT Automation, Encryption, Network Analysis, Public Key Infrastructure
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Firewall, Network Security, System Configuration, Network Administration, Amazon Web Services, Virtual Private Networks (VPN), Infrastructure Security, Network Troubleshooting, Security Information and Event Management (SIEM), Threat Management, Endpoint Security, Intrusion Detection and Prevention, System Monitoring, Threat Detection, Cloud Deployment
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Firewall, Network Security, Intrusion Detection and Prevention, Information Systems Security, Security Controls, Network Monitoring, Threat Detection, Linux Administration, Linux
Intermediate · Course · 1 - 4 Weeks