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.

Skills you'll gain: Software Testing, Business Logic, Test Tools, Cryptography, Cybersecurity, Identity and Access Management, Authentications, Vulnerability Assessments, Encryption, Data Validation, Network Protocols
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Blockchain, Key Management, Public Key Infrastructure, Cryptography, Application Security, Encryption, Secure Coding, Public Key Cryptography Standards (PKCS), Security Testing, Vulnerability Management, Solution Design, Cyber Governance, Vulnerability Assessments, Code Review, Authorization (Computing), Data Integrity
★ 4.5 (11) · Intermediate · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Cloud Management, Cloud Computing Architecture, Identity and Access Management, Cloud Infrastructure, AWS Identity and Access Management (IAM), Virtualization and Virtual Machines, Virtual Machines, Cloud Security, Virtualization, Cloud Deployment, Cloud Platforms, Authorization (Computing), Infrastructure As A Service (IaaS), Cloud Services, Role-Based Access Control (RBAC), User Provisioning, Authentications, Security Awareness, Cyber Threat Intelligence, Cyber Security Strategy
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Enterprise Risk Management (ERM), Cyber Governance, Business Risk Management, Security Management, Security Strategy, Governance, Governance Risk Management and Compliance, Law, Regulation, and Compliance, Risk Management, Compliance Management, Risk Management Framework, Regulatory Compliance, Strategic Planning, Security Controls, Policy Development, Contract Compliance, Business Continuity Planning, Performance Measurement, Stakeholder Management, Business Development
Mixed · Course · 1 - 3 Months

AI CERTs
Skills you'll gain: Threat Modeling, Security Controls, Key Management, Security Management, Cybersecurity, Cyber Attacks, Hardening, Enterprise Security, Cyber Security Assessment
Beginner · Course · 1 - 4 Weeks

University at Buffalo
Skills you'll gain: Intrusion Detection and Prevention, Security Controls, Continuous Monitoring, Incident Response, Cyber Attacks, Vulnerability Assessments, Software Development Life Cycle, Cybersecurity, Application Security, Computer Security Incident Management, Security Management, Cyber Security Strategy, Information Systems Security, Secure Coding, Cyber Security Policies, Cyber Security Assessment, Threat Management, Threat Detection, Information Assurance, Network Security
★ 4.7 (666) · Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Cybersecurity, Cyber Security Strategy, Risk Management Framework, Infrastructure Security, Cyber Attacks, Cyber Risk, Cyber Security Policies, Public Safety and National Security, Cyber Security Assessment, Cyber Operations, Security Management, Cyber Governance, Continuous Monitoring, Incident Response, Technology Roadmaps, Cyber Threat Intelligence, Network Infrastructure, Technology Solutions, Transportation Operations, Computer Security
★ 4.7 (634) · Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Security Controls, Vulnerability Scanning, ISO/IEC 27001, Penetration Testing, Vulnerability Assessments, Security Information and Event Management (SIEM), Data Security, Compliance Auditing, Security Assertion Markup Language (SAML), Computer Security Incident Management, Multi-Factor Authentication, Authentications, Computer Security Awareness Training, Single Sign-On (SSO), Event Monitoring, Authorization (Computing), Encryption, Cryptographic Protocols, Advanced Encryption Standard (AES), End User Training and Support
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Google Gemini, Google Cloud Platform, Virtual Networking, Generative AI, Prompt Engineering, Network Engineering, General Networking, Network Architecture
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Security Controls, Multi-Factor Authentication, Security Management, Authorization (Computing), User Accounts, Content Management Systems, User Provisioning, Identity and Access Management, Data Security, Authentications, Data Management, Data Access, IT Security Architecture, Encryption
Intermediate · Course · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: AI Security, Penetration Testing, Exploit development, Network Security, Exploitation techniques, Open Web Application Security Project (OWASP), Cyber Security Assessment, Unix, Cyber Operations, Computer Security, Cybersecurity, Artificial Intelligence and Machine Learning (AI/ML), Cryptographic Protocols, Network Protocols, Cryptography, Security Awareness, Generative AI Agents, Server Side, Web Applications, Machine Learning Algorithms
★ 4.5 (21) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Linux Administration, Linux Servers, Linux, Operating System Administration, Bash (Scripting Language), Linux Commands, Hardening, Systems Administration, Infrastructure as Code (IaC), Shell Script, Network Troubleshooting, System Monitoring, Software Configuration Management, Security Controls, Hardware Troubleshooting, Event Monitoring, Configuration Management, Continuous Monitoring, Firewall, Automation
Advanced · Course · 1 - 4 Weeks