Linux security courses can help you learn system hardening, user access controls, network security protocols, and incident response strategies. You can build skills in configuring firewalls, implementing encryption techniques, and conducting security audits. Many courses introduce tools like iptables for firewall management, OpenSSL for encryption, and Wireshark for network analysis, showing how these skills are applied in practical work to protect systems from vulnerabilities and threats.

University of Colorado Boulder
Skills you'll gain: AI Security, Open Web Application Security Project (OWASP), Exploitation techniques, Server Side, Application Security, Artificial Intelligence and Machine Learning (AI/ML), Responsible AI, Data Security, LLM Application, Cyber Attacks, Security Awareness, Generative AI, Large Language Modeling, Generative AI Agents, Prompt Engineering
★ 4.2 (6) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Authorization (Computing), Authentications, Azure DevOps, DevSecOps, Azure DevOps Pipelines, OAuth, Security Controls, Performance Tuning, Secure Coding, Identity and Access Management, Microsoft Azure, System Monitoring, DevOps, Continuous Monitoring, Qualys, Multi-Factor Authentication, Network Monitoring, Event Monitoring, SonarQube, Personally Identifiable Information
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Computer Security Awareness Training, Security Awareness, Cyber Attacks, Email Security, Cybersecurity, Malware Protection, Human Factors (Security), Encryption, Threat Detection, Multi-Factor Authentication, Internet Of Things, Information Privacy, Network Security, Personally Identifiable Information, Authentications, Data Security, Security Controls, Mobile Security, Identity and Access Management, Incident Response
Beginner · Course · 3 - 6 Months

Skills you'll gain: Disaster Recovery, System Monitoring, Event Monitoring, Kubernetes, DevOps, Continuous Monitoring, Security Controls, Key Management, Authentications, Encryption
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Identity and Access Management, Cloud Security, Google Cloud Platform, Security Controls, Cloud Computing, Authorization (Computing), Cloud Management, User Provisioning, Role-Based Access Control (RBAC), Firewall, Data Security, Network Security, Cloud Standards, Threat Management, Virtual Networking, Authentications, User Accounts, Distributed Denial-Of-Service (DDoS) Attacks
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Incident Response, Digital Forensics, Business Continuity Planning, Disaster Recovery, Computer Security Incident Management, Incident Management, Investigation, Business Continuity, Contingency Planning, Cybersecurity, Resource Management, Resource Allocation, Prioritization, Resource Planning, Business Analysis, Data Loss Prevention, Law, Regulation, and Compliance, Ethical Standards And Conduct
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, OSI Models, Distributed Denial-Of-Service (DDoS) Attacks, Firewall, TCP/IP, Network Administration, Wireless Networks, Network Protocols, General Networking, Telecommunications, Intrusion Detection and Prevention, Network Routers, Security Controls, Identity and Access Management, Mobile Security, Authentications
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Kubernetes, DevSecOps, Infrastructure Security, Vulnerability Scanning, Security Testing, Containerization, Vulnerability Management, Hardening, Authentications, Image Analysis
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Infrastructure Security, Public Safety and National Security, Cybersecurity, Cyber Security Strategy, Security Management, Cyber Threat Intelligence, Cyber Attacks, Cyber Security Policies, Security Strategy, Threat Management, Computer Security, Policy Analysis, Research, and Development, World History, Dependency Analysis
★ 4.7 (384) · Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: AI Security, Responsible AI, Data Security, Security Strategy, Security Management, Infrastructure Security, Risking, Artificial Intelligence
★ 4.6 (10) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: AWS Identity and Access Management (IAM), Identity and Access Management, Amazon Web Services, User Provisioning, Role-Based Access Control (RBAC), Authorization (Computing), User Accounts, Cloud Security, Data Security, Cloud Platforms, Command-Line Interface
★ 4.8 (14) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Threat Modeling, Incident Management, Remote Access Systems, Cyber Security Policies, Incident Response, Security Management, Computer Security Incident Management, Data Security, Vulnerability Assessments, Law, Regulation, and Compliance, Threat Detection, Security Strategy, Cybersecurity, Security Controls, Cyber Security Assessment, Security Software, Vulnerability Management, Computer Security Awareness Training, Telecommuting, Infrastructure Security
★ 4.9 (11) · Beginner · Specialization · 1 - 3 Months