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.

Skills you'll gain: MITRE ATT&CK Framework, Cybersecurity, Cyber Operations, Exploitation techniques, IT Automation, Scripting, Python Programming, Scripting Languages
★ 4.5 (434) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Microsoft Azure, Virtual Machines, Virtualization and Virtual Machines, Cloud Development, Cloud Hosting, Infrastructure As A Service (IaaS), Cloud Deployment, Application Deployment, Linux, Cloud Management, Linux Servers, Full-Stack Web Development, Web Applications, Node.JS, MongoDB
★ 4.6 (32) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Exploitation techniques, Metasploit, Vulnerability Assessments, Vulnerability Scanning, Security Testing, Security Controls, Brute-force attacks, Virtual Environment, Cybersecurity, Virtual Machines, Technical Writing, Technical Documentation, Linux
★ 4 (7) · Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Routing Protocols, Network Routing, Open Shortest Path First (OSPF), TCP/IP, Network Routers, Network Protocols, Network Architecture, Network Switches, Virtual Networking, Network Performance Management, Computer Networking, OSI Models, Local Area Networks, Graph Theory, Algorithms
★ 4.7 (455) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Kubernetes, Application Deployment, API Gateway, Cloud-Native Computing, Containerization, Network Troubleshooting, Data Storage, Network Administration, Infrastructure Security, Role-Based Access Control (RBAC), YAML, Security Controls, Linux Administration, Data Storage Technologies, General Networking, Problem Management, Network Security, Data Persistence, Test Tools, Scenario Testing
★ 4.4 (18) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Generative AI, Agentic Workflows, AI Workflows, Generative AI Agents, AI Orchestration, Retrieval-Augmented Generation, Generative Model Architectures, Microsoft Azure, Agentic systems, Artificial Intelligence and Machine Learning (AI/ML), AI Security, LLM Application, Application Deployment, Responsible AI, ChatGPT, Artificial Intelligence, Artificial Neural Networks, Deep Learning, Machine Learning
★ 3.7 (54) · Intermediate · Specialization · 3 - 6 Months

Universiteit Leiden
Skills you'll gain: Risk Management, Operational Risk, Risk Mitigation, Risk Analysis, Safety and Security, Hazard Analysis, Cybersecurity, Environmental Issue, Public Health
★ 4.7 (228) · Beginner · Course · 1 - 3 Months

Skills you'll gain: MITRE ATT&CK Framework, Network Security, Cybersecurity, Exploitation techniques, Penetration Testing, Cyber Attacks, Python Programming, Data Access, Authentications, Scripting, Remote Access Systems, User Accounts
★ 4.8 (69) · Intermediate · Course · 1 - 4 Weeks

The University of Sydney
Skills you'll gain: Blockchain, Distributed Computing, Network Security, Cryptographic Protocols, Scalability, Transaction Processing, Algorithms
★ 4.5 (121) · Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Responsible AI, HR Tech, Human Resources Management and Planning, Employee Engagement, Human Resources, Human Resource Management, Generative AI, Data Ethics, People Analytics, Talent Recruitment, Talent Acquisition, Human Resource Strategy, Recruitment, Trend Analysis, Employee Training, Employee Retention, Workforce Development, Workforce Planning, AI Security, Training Programs
★ 4.3 (254) · Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Cloud Computing Architecture, Cloud Infrastructure, Cloud Solutions, Cloud Security, Cloud Computing, Solution Architecture, Google Cloud Platform, Cloud Management, Process Optimization, Cloud Platforms, Solution Delivery, Process Improvement and Optimization, System Implementation, Process Analysis, Business Solutions, Cloud Deployment, Solution Design
★ 4.7 (1.4K) · Advanced · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Remote Access Systems, Linux, Restful API, Web Applications, Internet Of Things, Embedded Systems, Application Programming Interface (API), Robotics, Linux Commands, Command-Line Interface, Application Security, Electronics, Product Automation, System Configuration, Python Programming, Electronic Components, Software Installation
★ 4.8 (56) · Mixed · Course · 1 - 4 Weeks