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: Penetration Testing, Threat Management, Distributed Denial-Of-Service (DDoS) Attacks, Cloud Security, Vulnerability Assessments, Security Testing, Network Security, Cyber Security Assessment, Cybersecurity, Cloud Computing, Cyber Attacks, Brute-force attacks, Exploitation techniques, Human Factors (Security), Web Applications, Mobile Security, Internet Of Things, Wireless Networks
★ 4.6 (614) · Beginner · Course · 1 - 3 Months

Kennesaw State University
Skills you'll gain: Cyber Security Strategy, Cybersecurity, Mobile Security, Cyber Attacks, Cyber Threat Intelligence, Security Management, Network Security, Cyber Security Policies, Internet Of Things, Cyber Governance, Digital Transformation, Emerging Technologies
★ 4.5 (639) · Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Vulnerability Assessments, Vulnerability Scanning, Cyber Security Assessment, Network Monitoring, Penetration Testing, Virtual Private Networks (VPN), Command-Line Interface, Security Testing, Linux Commands, Cyber Operations, Cybersecurity, Information Systems Security, Linux, Software Installation, Network Security, Linux Administration, Network Analysis
★ 4.3 (238) · Intermediate · Course · 1 - 4 Weeks

Erasmus University Rotterdam
Skills you'll gain: Email Security, Human Factors (Security), Cyber Security Policies, Cybersecurity, Cyber Attacks, Security Awareness, Cyber Risk, Computer Security Awareness Training, Threat Management, Patient Safety, Malware Protection, Security Controls, Encryption, Health Technology, Data Security, Information Privacy
★ 4.6 (401) · Beginner · Course · 1 - 3 Months

New York University
Skills you'll gain: Network Security, Firewall, IT Security Architecture, Distributed Denial-Of-Service (DDoS) Attacks, Network Architecture, Intrusion Detection and Prevention, TCP/IP, Cybersecurity, Threat Detection, Cyber Threat Intelligence, Cyber Attacks, Security Controls, Enterprise Security, Network Protocols, Proxy Servers
★ 4.7 (663) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, Wide Area Networks, Network Security, Network Routing, Data Centers, Virtual Networking, TCP/IP, Network Administration, Open Shortest Path First (OSPF), Network Protocols, Network Switches, Virtual Machines, Virtual Local Area Network (VLAN), Virtualization, Virtual Private Networks (VPN), Wireless Networks, Network Monitoring, Network Troubleshooting, Network Architecture, Hardware Troubleshooting
★ 4.5 (6) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Database Administration, Database Management, Relational Databases, SQL, Google Cloud Platform, Operational Databases, Database Design, Database Architecture and Administration, MySQL, Database Management Systems, System Configuration, Data Migration, Cloud Deployment, Database Software, Network Administration, Data Maintenance, Security Controls, Data Import/Export, Data Storage, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Email Security, Cloud Security, Intrusion Detection and Prevention, Incident Response, Computer Security Incident Management, Incident Management, Vulnerability Management, Risk Management Framework, Malware Protection, Security Management, Threat Management, Application Security, Cloud Computing, Cybersecurity, Cyber Attacks, Disaster Recovery, Vulnerability Assessments, Threat Detection, Network Security, Risk Management
Intermediate · Specialization · 1 - 3 Months

Microsoft
Skills you'll gain: Microsoft Azure, Virtual Machines, Virtualization and Virtual Machines, Scalability, Cloud Computing, Cloud Services, Infrastructure As A Service (IaaS), Cloud Infrastructure, Virtual Networking, Cloud Deployment, Kubernetes, Cloud Security, Network Security, Cloud Management, Network Routing, Security Controls, Load Balancing, Infrastructure Security, Application Deployment, Operating System Administration
★ 4.8 (30) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Patch Management, Microsoft Azure, Cloud Management, Identity and Access Management, Cloud Infrastructure, Cloud Computing, Infrastructure As A Service (IaaS), Cloud Services, Cloud Deployment, Disaster Recovery, Virtual Machines, Kubernetes, Cloud Platforms, Role-Based Access Control (RBAC), Virtual Networking, Windows PowerShell, System Monitoring, Infrastructure as Code (IaC), Application Deployment, Load Balancing
★ 4.6 (173) · Beginner · Specialization · 3 - 6 Months

Cisco Learning and Certifications
Skills you'll gain: MITRE ATT&CK Framework, Threat Modeling, Cyber Threat Intelligence, Threat Detection, Exploitation techniques, Intrusion Detection and Prevention, Event Monitoring, Computer Security Incident Management, Malware Protection, Network Analysis, Anomaly Detection, Network Security, Network Monitoring, Network Protocols
★ 4.9 (34) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Open Shortest Path First (OSPF), Network Performance Management, Network Monitoring, Network Planning And Design, Network Engineering, Network Protocols, Infrastructure as Code (IaC), Terraform, Configuration Management, Encryption, System Configuration, Authentications, Scalability
★ 4.7 (24) · Beginner · Specialization · 3 - 6 Months