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, General Networking, Network Routing, Network Routers, Computer Networking, Network Infrastructure, Routing Protocols, Network Model, Cryptography, Web Applications
Build toward a degree
Intermediate · Course · 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 Infrastructure, Network Routing, Network Monitoring, Private Cloud
Intermediate · Course · 1 - 4 Weeks

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

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

Whizlabs
Skills you'll gain: Infrastructure Security, Vulnerability Scanning, Network Security, Amazon Web Services, Firewall, Virtual Networking, Virtual Private Networks (VPN), Security Controls, Cloud Security, AWS Identity and Access Management (IAM), Distributed Denial-Of-Service (DDoS) Attacks, Load Balancing
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: User Accounts
Intermediate · Course · 1 - 3 Months

Akamai Technologies, Inc.
Skills you'll gain: Endpoint Security, Incident Response, Network Security, Vulnerability Scanning, Computer Security Incident Management, Security Management, Penetration Testing, Cybersecurity, Authentications, Vulnerability Assessments, Encryption, Firewall, Identity and Access Management, Hardening, Threat Detection, Disaster Recovery, Public Key Infrastructure, Mobile Security, Risk Management Framework, Risk Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: Virtual Private Networks (VPN), Linux Servers, Ubuntu, Network Troubleshooting, Authentications, Remote Access Systems, Encryption, Network Security, Linux, Network Monitoring, Network Performance Management, Cross Platform Development
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Risk Management Framework, Risk Analysis, Risk Management, Cybersecurity, Network Security, Incident Response, Cloud Security, Authentications, Business Continuity Planning, Application Security, IT Management, Security Management, Threat Modeling, Computer Security Incident Management, Threat Management, OSI Models, Business Risk Management, Disaster Recovery, Cryptography, Vulnerability Assessments
Intermediate · Specialization · 1 - 3 Months

Macquarie University
Skills you'll gain: Cryptography, Encryption, Data Security, Cybersecurity, Network Security, Public Key Infrastructure, Data Encryption Standard, Security Engineering, Blockchain, Data Storage Technologies, Wireless Networks, Security Management, Virtual Private Networks (VPN), Intellectual Property, Authentications, Hardware Architecture, Emerging Technologies
Beginner · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Cloud Security, Identity and Access Management, AWS Identity and Access Management (IAM), Incident Response, Cloud Computing, Cloud Computing Architecture, Data Security, Application Security, Network Security, Encryption, Role-Based Access Control (RBAC), Amazon Web Services, Key Management, Infrastructure Security, Security Controls, Firewall, Continuous Monitoring, Multi-Factor Authentication
Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Blockchain, Cryptography, Network Security, Secure Coding, Distributed Denial-Of-Service (DDoS) Attacks, Encryption, Cybersecurity, Vulnerability Assessments, Transaction Processing
Advanced · Course · 1 - 3 Months