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.

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

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

Skills you'll gain: NSX-T Network Virtualization, Virtual Networking, Virtualization, Network Architecture, Disaster Recovery, Software-Defined Networking, Network Security, Business Continuity Planning, IT Automation, Firewall, Network Routing, Business Transformation, Application Security, Hybrid Cloud Computing
Intermediate · Course · 1 - 3 Months

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: Network Security, Wireless Networks, Network Performance Management, Network Monitoring, Dynamic Host Configuration Protocol (DHCP), Ansible, Network Administration, Firewall, Software-Defined Networking, Network Planning And Design, Network Infrastructure, Network Protocols, Infrastructure as Code (IaC), Terraform, Configuration Management, Encryption
Advanced · Course · 3 - 6 Months
Skills you'll gain: Vulnerability Assessments, Network Security, Security Engineering, Telecommunications, Infrastructure Security, Cyber Security Assessment, Threat Detection, Network Analysis, Continuous Monitoring, Security Strategy, Internet Of Things, Emerging Technologies, General Networking, Network Architecture, Enterprise Architecture, Infrastructure Architecture, Virtualization
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, Network Security, Network Routing, TCP/IP, Open Shortest Path First (OSPF), Network Protocols, Network Switches, Virtual Local Area Network (VLAN), Network Monitoring, Virtual Private Networks (VPN), Firewall, Network Infrastructure, Network Troubleshooting, Border Gateway Protocol, Network Performance Management, Virtual Networking, Network Analysis, Authentications, Encryption
Intermediate · Course · 1 - 3 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: Penetration Testing, Cyber Security Assessment, Exploitation techniques, Vulnerability Assessments, Intrusion Detection and Prevention, Brute-force attacks, Application Security, Network Security, Virtual Local Area Network (VLAN), Cloud Security, API Testing, Wireless Networks
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Data Centers, Network Security, Network Troubleshooting, Virtual Machines, Network Monitoring, Wide Area Networks, Virtualization, Wireless Networks, Firewall, Cloud Infrastructure, Hardening, Network Architecture, Network Infrastructure, Virtual Private Networks (VPN), TCP/IP, Cloud Computing, Security Information and Event Management (SIEM), Remote Access Systems, Network Protocols, Internet Of Things
Advanced · Course · 1 - 3 Months

Skills you'll gain: Amazon Web Services, Distributed Denial-Of-Service (DDoS) Attacks, Infrastructure Security, Cloud Security, Network Security, Application Security, Firewall, Amazon Elastic Compute Cloud, Endpoint Security, Data Security, Vulnerability Management, Threat Detection, Identity and Access Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Virtualization, Augmented and Virtual Reality (AR/VR), Network Administration, Virtual Machines, Cloud Computing, Firewall, Virtual Private Networks (VPN), Mobile Security, Network Troubleshooting, Computer Networking, Cloud Security, Wireless Networks, Peripheral Devices
Intermediate · Course · 1 - 3 Months