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.

Packt
Skills you'll gain: Networking Hardware, General Networking, Network Infrastructure, Local Area Networks, OSI Models, Network Protocols, Network Support, Network Troubleshooting, Dynamic Host Configuration Protocol (DHCP), TCP/IP, Network Architecture, Computer Networking, Network Planning And Design, Wireless Networks, Network Security, Network Switches, Virtual Local Area Network (VLAN)
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Threat Intelligence, Cyber Threat Hunting, Threat Detection, Vulnerability Assessments, Incident Response, Security Information and Event Management (SIEM), Threat Management, Cybersecurity, Computer Security Incident Management, IT Security Architecture, Cloud Security, Security Architecture Review, Cyber Risk, Cyber Security Policies, Data Security, Network Security, Cyber Security Strategy, Personally Identifiable Information, Malware Protection, Risk Management
★ 4.7 (6) · Beginner · Specialization · 1 - 4 Weeks

Skills you'll gain: Network Troubleshooting, Network Security, OSI Models, Network Monitoring, Network Performance Management, Network Architecture, Computer Networking, TCP/IP, General Networking, Local Area Networks, Cybersecurity, Network Analysis, Network Protocols, Network Infrastructure, Network Support, Information Systems Security, Software-Defined Networking, Network Administration, Network Planning And Design, Network Routing
★ 4.7 (27) · Beginner · Course · 1 - 3 Months

Skills you'll gain: MITRE ATT&CK Framework, Network Security, Cybersecurity, Exploitation techniques, Penetration Testing, Cyber Attacks, Python Programming, Data Access, Authentications, Scripting, Remote Access Systems, User Accounts
★ 4.8 (68) · Intermediate · Course · 1 - 4 Weeks

SkillUp
Skills you'll gain: Computer Security Awareness Training, Security Awareness, Cybersecurity, Cyber Attacks, Cyber Threat Intelligence, Incident Response, Cyber Risk, Responsible AI, Data Ethics, Threat Management, Threat Detection, Malware Protection, Information Systems Security, Network Security, Security Controls, Data Security, Multi-Factor Authentication, AI Security, Personally Identifiable Information, Authentications
★ 4.9 (14) · Beginner · Course · 1 - 4 Weeks

Starweaver
Skills you'll gain: Virtual Networking, Network Protocols, Network Planning And Design, Network Security, General Networking, Network Administration, Communication Systems, Network Performance Management, Network Architecture, Network Monitoring, Virtualization, Network Routing, Digital Communications, Network Infrastructure, Computer Networking, TCP/IP, Routing Protocols, Cybersecurity, Emerging Technologies, Cyber Security Strategy
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, Virtual Private Networks (VPN), Network Troubleshooting, Open Shortest Path First (OSPF), Network Engineering, Network Routing, Border Gateway Protocol, Multiprotocol Label Switching, Network Administration, Wide Area Networks, Network Protocols, Network Security, Network Monitoring, Network Performance Management, Dynamic Host Configuration Protocol (DHCP), Authentications
Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Network Analysis, Network Security, Intrusion Detection and Prevention, Cybersecurity, Threat Detection, Network Monitoring, Anomaly Detection, Network Protocols
★ 4.6 (37) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: MITRE ATT&CK Framework, Vulnerability Assessments, Open Web Application Security Project (OWASP), Distributed Denial-Of-Service (DDoS) Attacks, Vulnerability Scanning, Vulnerability Management, Threat Modeling, Cybersecurity, Malware Protection, Mobile Security, Cyber Threat Intelligence, Penetration Testing, Exploitation techniques, Brute-force attacks, Network Security, Cryptography, Threat Management, Information Systems Security, Threat Detection, Cloud Security
★ 4.8 (32) · Beginner · Specialization · 3 - 6 Months

Infosec
Skills you'll gain: Threat Detection, Cyber Security Strategy, System Monitoring, Cybersecurity, Cyber Operations, Continuous Monitoring, Network Security, Network Monitoring, Python Programming, Scripting, Scripting Languages
★ 4.5 (86) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Application Deployment, Data Maintenance, Network Architecture, Data Storage, Network Infrastructure, Scalability, Issue Tracking, Public Cloud, Information Assurance, General Networking, Network Monitoring, Data Security, Serverless Computing, Network Planning And Design, Network Security, Data Loss Prevention, Remote Access Systems, Hybrid Cloud Computing, Dashboard Creation
★ 4 (23) · Intermediate · Specialization · 1 - 3 Months

Google Cloud
Skills you'll gain: Security Information and Event Management (SIEM), Security Management, Computer Security Incident Management, Security Controls, Event Monitoring, Threat Detection, System Configuration, System Monitoring, Network Security, Cloud Security, Google Cloud Platform, Cloud Computing
Beginner · Project · Less Than 2 Hours