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 Boulder
Skills you'll gain: OSI Models, Network Security, TCP/IP, Network Architecture, Network Protocols, Network Routing, Network Routers, Computer Networking, Infrastructure Security, Routing Protocols, Public Key Infrastructure, Network Model, Cryptographic Protocols, Web Applications, Application Servers
Build toward a degree
Intermediate · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Computer Security Incident Management, Vulnerability Management, Cyber Security Strategy, Cyber Governance, Incident Response, Cyber Operations, Cyber Threat Intelligence, Encryption, Cyber Attacks, Security Management, Governance Risk Management and Compliance, Incident Management, Cryptographic Protocols, Threat Detection, Security Strategy, Mobile Security, Vulnerability, Security Awareness, Vulnerability Assessments, Vulnerability Scanning
Beginner · Specialization · 1 - 3 Months

EDUCBA
Skills you'll gain: Microsoft Azure, Network Troubleshooting, Network Security, Network Architecture, Virtual Networking, Network Administration, Wide Area Networks, Hardening, Virtual Private Networks (VPN), Network Routing, Remote Access Systems
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, TCP/IP, Network Troubleshooting, OSI Models, Network Switches, Data Centers, Network Routers, Virtual Local Area Network (VLAN), Network Protocols, Network Security, Network Administration, General Networking, Network Routing, Virtualization and Virtual Machines, Computer Networking, Virtual Machines, Network Monitoring, Network Model, Network Support, Networking Hardware
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Network Security, Disaster Recovery, General Networking, Network Engineering, Network Administration, Authentications, Network Architecture, Vulnerability Assessments, Computer Networking, Network Infrastructure, Computer Security, Wireless Networks, Cybersecurity, Information Systems Security, Network Monitoring, Local Area Networks, Vulnerability Management, Network Performance Management, Telecommunications, Network Protocols
Intermediate · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Key Management, Data Security, Cryptography, Encryption, Cybersecurity, Network Security, Cryptographic Protocols, Security Information and Event Management (SIEM), Network Monitoring, Information Assurance, Network Analysis, Intrusion Detection and Prevention, Security Controls, Event Monitoring, Continuous Monitoring, Threat Detection, Data Integrity
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Network Planning And Design, Microsoft Azure, Network Security, Network Troubleshooting, Network Architecture, Network Support, Network Administration, IT Security Architecture, Security Engineering, Firewall, Network Monitoring, Virtual Private Networks (VPN), Virtual Networking, Network Routing, Role-Based Access Control (RBAC), General Networking, Network Performance Management, Hybrid Cloud Computing, Data Migration
Intermediate · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Information Systems Security, Security Management, Cyber Attacks, Cybersecurity, Incident Response, Computer Security Incident Management, Security Strategy, Data Security, Security Controls, Threat Management, Information Assurance, Network Security, Threat Detection, Encryption, Information Systems, Malware Protection, Identity and Access Management, Management Information Systems, Data Governance, Information Management
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Anomaly Detection, Malware Protection, Threat Detection, Network Analysis, AI Security, Cybersecurity, Model Evaluation, Network Security, Machine Learning Methods, Classification Algorithms, Microsoft Windows
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Network Planning And Design, Network Troubleshooting, Internet Of Things, Network Security, Network Engineering, Network Architecture, Computer Networking, Network Infrastructure, Network Routers, TCP/IP, Network Routing, Virtual Local Area Network (VLAN), Routing Protocols, System Configuration, Network Switches, Firewall, Enterprise Architecture, Dynamic Host Configuration Protocol (DHCP), Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: IT Security Architecture, Network Security, Security Architecture Review, Infrastructure Security, Enterprise Application Management, Software-Defined Networking, Application Security, Zero Trust Network Access, Security Engineering, Network Architecture, Cyber Security Strategy, Cybersecurity, Enterprise Architecture, Software Quality Assurance, Security Controls, Network Planning And Design, Cloud Security, Cryptography
Advanced · Course · 1 - 4 Weeks

Whizlabs
Skills you'll gain: Infrastructure Security, Vulnerability Scanning, Network Security, Amazon Web Services, Firewall, Vulnerability Assessments, Network Infrastructure, Virtual Networking, Security Controls, Cloud Security, Vulnerability Management, Endpoint Security, Network Planning And Design, Distributed Denial-Of-Service (DDoS) Attacks, Load Balancing
Intermediate · Course · 1 - 4 Weeks