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, Cloud Services, TCP/IP, Cloud Computing, Cloud Infrastructure, Software-Defined Networking, Network Architecture, Virtual Networking, Wide Area Networks, Cloud Engineering, Network Protocols, Cloud Computing Architecture, Cloud Platforms, Linux Administration, Network Troubleshooting, Linux, Kubernetes, Network Switches, Terraform
★ 4.6 (140) · Intermediate · Specialization · 3 - 6 Months

Google Cloud
Skills you'll gain: Network Performance Management, Network Monitoring, Performance Tuning, Virtual Networking, Google Cloud Platform, Performance Testing, Network Troubleshooting, Network Analysis, Hardware Architecture, Intranet
Intermediate · Project · Less Than 2 Hours

Packt
Skills you'll gain: Spring Framework, Security Assertion Markup Language (SAML), OAuth, Secure Coding, Single Sign-On (SSO), Lightweight Directory Access Protocols, Authorization (Computing), Application Security, Cloud Security, Build Tools, Gradle, Authentications, Cloud-Native Computing, Back-End Web Development, Object-Relational Mapping, Identity and Access Management, Spring Boot, Database Development, Java, Kubernetes
Intermediate · Specialization · 3 - 6 Months

ISC2
Skills you'll gain: System Configuration, Configuration Management, Cyber Operations, Cybersecurity, Security Awareness, Computer Security Awareness Training, Data Security, Security Controls, Security Management, Event Monitoring, Encryption, Network Security, Continuous Monitoring, Software Configuration Management, Network Administration, IT General Controls (ITGC), Cyber Security Policies, Information Technology Operations, System Monitoring, Cryptography
★ 4.7 (216) · Beginner · Course · 1 - 3 Months

University of Maryland, College Park
Skills you'll gain: Human Factors (Security), Usability, Human Computer Interaction, Authentications, Security Engineering, Usability Testing, Interaction Design, User Interface (UI), Human Factors, Information Privacy, Cybersecurity, Personally Identifiable Information, User Interface (UI) Design, Multi-Factor Authentication, User Centered Design, Design
★ 4.6 (3.3K) · Mixed · Course · 1 - 3 Months

John Wiley & Sons
Skills you'll gain: Application Security, Security Testing, Cyber Security Assessment, Secure Coding, Vulnerability Scanning, Vulnerability Assessments, Penetration Testing, Security Controls, Security Management, DevSecOps, Security Software, Cyber Operations, Continuous Monitoring, Information Systems Security, Cybersecurity, Information Technology Operations, Intrusion Detection and Prevention, Test Tools, Incident Response, Risk Management
Intermediate · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Social Network Analysis, Network Analysis, Social Sciences, Sociology, Social Studies, Social Impact, Systems Thinking, Simulations, Culture, Graph Theory, Complex Problem Solving, Innovation
★ 4.6 (402) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Virtualization and Virtual Machines, Virtualization, Hardware Troubleshooting, Network Troubleshooting, Computer Hardware, Cloud Computing, Technical Support and Services, Technical Support, General Networking, End User Training and Support, Peripheral Devices, Networking Hardware, System Configuration, Data Storage, Network Administration, Network Infrastructure, Information Technology, Hardware Architecture, Data Storage Technologies, Configuration Management
★ 4.6 (214) · Advanced · Course · 1 - 3 Months

University of Maryland, College Park
Skills you'll gain: Hardware Design, Security Engineering, Computer Hardware, Hardware Architecture, Hardening, Computer Security, Threat Modeling, Threat Detection, Cybersecurity, Intrusion Detection and Prevention, Security Architecture Review, Application Specific Integrated Circuits, Cryptographic Protocols, Microarchitecture, Cryptography, Systems Design, Encryption, Exploitation techniques, Functional Design, Emerging Technologies
★ 4.3 (693) · Mixed · Course · 1 - 3 Months

Infosec
Skills you'll gain: Blockchain, Network Security, Application Security, Computer Security, Cryptography, Cryptographic Protocols, Secure Coding, Encryption, Vulnerability Assessments, Scalability, Distributed Computing, Data Integrity, Exploitation techniques, Transaction Processing, Algorithms
★ 4.7 (89) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Routing Protocols, Virtual Networking, Network Routing, Network Architecture, Hybrid Cloud Computing, Network Planning And Design, Amazon Web Services, Virtual Private Networks (VPN), General Networking, Network Infrastructure, Network Administration, Network Performance Management, Network Security, Cloud Infrastructure, Cloud Computing, Network Analysis, Security Controls, Operations Management
Intermediate · Course · 1 - 4 Weeks

John Wiley & Sons
Skills you'll gain: Vulnerability Scanning, Incident Response, Vulnerability Assessments, Cloud Security, Threat Management, Endpoint Security, Cyber Threat Intelligence, Risk Management, Risk Management Framework, Incident Management, Vulnerability Management, Cyber Security Assessment, Intrusion Detection and Prevention, Threat Detection, Cloud Computing, Security Strategy, Cyber Security Strategy, Cybersecurity, Network Security, Cryptography
Intermediate · Course · 1 - 4 Weeks