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.

LearnQuest
Skills you'll gain: Network Architecture, Network Protocols, Wireless Networks, Network Performance Management, Network Planning And Design, Network Infrastructure, Communication Systems, Telecommunications, Emerging Technologies
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Kubernetes, Microsoft Azure, Docker (Software), YAML, Containerization, Application Deployment, Cloud Deployment, Security Controls, Virtual Networking, General Networking, Command-Line Interface
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Penetration Testing, Vulnerability Scanning, Cyber Security Assessment, Vulnerability Assessments, MITRE ATT&CK Framework, Threat Detection, Infrastructure Security, Payment Card Industry (PCI) Data Security Standards, NIST 800-53, Network Analysis, General Data Protection Regulation (GDPR)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Flask (Web Framework), Application Deployment, Web Applications, Application Frameworks, Application Development, HTML and CSS, Python Programming
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: System Monitoring, Computer Security Incident Management, Network Analysis, Data Integrity
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Infrastructure, Google Cloud Platform, Cloud Computing Architecture, Virtual Networking, Virtual Machines, Cloud Computing, Virtualization, Network Administration, Network Security, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Responsive Web Design, HTML and CSS, Bootstrap (Front-End Framework), Web Design and Development, Web Applications, Browser Compatibility, User Experience Design, Requirements Analysis, Client Services, Javascript
Mixed · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Prompt Engineering, Computer Vision, Data Wrangling, Artificial Intelligence, Cloud Security, Embeddings, Model Deployment, MLOps (Machine Learning Operations), Data Security, Data Governance, Deep Learning, Encryption, Public Cloud, General Data Protection Regulation (GDPR)
Beginner · Specialization · 1 - 3 Months

Whizlabs
Skills you'll gain: Microsoft Azure, Role-Based Access Control (RBAC), Cloud Storage, Data Storage, Identity and Access Management, Cloud Management, Data Management, Data Security, Data Governance, Data Encryption Standard, Disaster Recovery
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, Linux, System Configuration, Operating System Administration, Systems Administration, File Systems, Virtualization, File Management, Virtual Machines, Information Technology, Data Storage Technologies, Technical Communication
Advanced · Course · 1 - 3 Months

Skills you'll gain: Network Planning And Design, Microsoft Azure, Network Troubleshooting, Network Security, Network Architecture, Network Monitoring, Load Balancing, Virtual Networking, Network Performance Management, Network Support, Network Administration, Network Infrastructure, Scalability, Computer Networking, Firewall, Virtual Private Networks (VPN), Performance Tuning, Cloud Deployment, Wide Area Networks, Network Routing
Beginner · Specialization · 3 - 6 Months

University of Colorado System
Skills you'll gain: Security Requirements Analysis, Requirements Analysis, Risk Management Framework, Risking, User Requirements Documents, Scalability, Verification And Validation, Software Visualization, Safety and Security
Beginner · Course · 1 - 4 Weeks