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.

AI CERTs
Skills you'll gain: System Monitoring, Continuous Monitoring, Infrastructure Security, Cryptographic Protocols, Security Controls
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Operating System Administration, Cloud Computing, Linux, Linux Commands, Linux Administration, Cloud Computing Architecture, Cloud Security, Operating Systems, Windows Servers, Microsoft Windows, File Systems, Systems Administration, Mac OS, Command-Line Interface, Virtual Machines, Firewall, Virtualization, Knowledge of Apple Software, File Management, User Accounts
Beginner · Course · 1 - 3 Months

Skills you'll gain: Cloud Computing Architecture, Cloud Security, Cloud Deployment, Cloud Computing, Incident Response, Cloud Infrastructure, Cloud Solutions, Cloud Services, Incident Management, Capacity Management, Application Security, Security Controls, Cloud Management, Network Security, Data Security, Hardening, Scalability, Emerging Technologies, Identity and Access Management
Intermediate · Course · 1 - 4 Weeks

John Wiley & Sons
Skills you'll gain: Shell Script, Unix Shell, Bash (Scripting Language), Vulnerability Assessments, Linux, Linux Commands, Vulnerability Scanning, Linux Administration, System Monitoring, Continuous Monitoring, Security Testing, Scripting Languages, Security Management, Security Requirements Analysis, Computer Security Incident Management, Unix Commands, Scripting, Software Development Tools, Cyber Security Policies, Operating System Administration
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cyber Security Assessment, Security Testing, Vulnerability Assessments, Penetration Testing, White-Box Testing
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Internet Of Things, Security Engineering, Information Systems Security, Wireless Networks, Infrastructure Security, General Networking, Cybersecurity, IBM Cloud, Cloud Platforms, Cryptography, Telecommunications, Network Protocols, Market Opportunities, Automation, Emerging Technologies, Embedded Systems, Cloud Deployment, Software-Defined Networking, Market Intelligence
Build toward a degree
Intermediate · Course · 1 - 3 Months
LearnQuest
Skills you'll gain: Blockchain, Key Management, Threat Modeling, Public Key Infrastructure, Security Controls, Cryptography, Cybersecurity, Data Security, Application Security, Network Security, Security Architecture Review, IT Security Architecture, Vulnerability Assessments, Encryption, Secure Coding, Cryptographic Protocols, Distributed Denial-Of-Service (DDoS) Attacks, Public Key Cryptography Standards (PKCS), Security Testing, Vulnerability Management
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: IT Security Architecture, Security Controls, Cryptography, Security Engineering, Application Security, Vulnerability Assessments, Information Systems Security, Cryptographic Protocols, Vulnerability Management, Encryption, Cybersecurity, Infrastructure Security, Computer Security, Public Key Infrastructure, Cyber Security Assessment, Data Integrity
Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Secure Coding, Application Security, Exploitation techniques, Web Applications, Javascript, Web Development, Node.JS, Java Programming
Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Linux Administration, Red Hat Enterprise Linux, Linux Servers, Network Troubleshooting, Linux, Event Monitoring, Systems Administration, Linux Commands, System Support, Hardening, System Monitoring, Security Controls, System Configuration, Network Administration, Authorization (Computing), Operating Systems, Unix Shell, Unix Commands, Command-Line Interface, Disaster Recovery
Advanced · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Network Monitoring, Network Planning And Design
Beginner · Course · 1 - 3 Months

Skills you'll gain: Threat Modeling, Incident Response, IT Security Architecture, Incident Management, Security Architecture Review, Application Security, Identity and Access Management, Security Testing, Continuous Monitoring, Information Systems Security, Network Security, Security Strategy, Systems Architecture, Security Management, Security Engineering, Zero Trust Network Access, Security Awareness, Risk Management Framework, Cybersecurity, Enterprise Architecture
Beginner · Specialization · 1 - 3 Months