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.

Infosec
Skills you'll gain: Application Security, Serverless Computing, Secure Coding, Risk Management Framework, Cloud Security, Threat Management, Infrastructure Security, Cloud Services, Cloud Platforms, Javascript, Node.JS
★ 4.6 (32) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: User Provisioning, System Support, Network Troubleshooting, Network Administration, Network Support, Data Maintenance, Software Installation, System Configuration, Servers, Virtual Machines, Virtualization
Intermediate · Course · 1 - 3 Months

University of London
Skills you'll gain: Network Security, IT Security Architecture, OSI Models, TCP/IP, Threat Modeling, Network Protocols, Computer Networking, Cybersecurity, Application Security, Network Architecture, General Networking, Cryptographic Protocols, Vulnerability Assessments, Network Infrastructure, Exploit development, Network Model, Network Routing, Communication Systems
★ 4.9 (33) · Beginner · Course · 1 - 3 Months
Skills you'll gain: Application Security, Angular, OAuth, Test Driven Development (TDD), Cryptography, Web Components, Data Validation, Unit Testing, Vue.JS, Development Testing, Data Security, Authentications, Encryption, Authorization (Computing), HTML and CSS, Hypertext Markup Language (HTML), Web Applications, Javascript, Security Strategy, Computer Programming
★ 4.3 (102) · Beginner · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: AI Security, Threat Modeling, Open Web Application Security Project (OWASP), Security Testing, Retrieval-Augmented Generation, Software Architecture, API Design, Test Automation, Vulnerability Management, Agentic systems, Systems Design, Model Evaluation, Test Driven Development (TDD), CI/CD, Python Programming, Continuous Deployment, Dependency Analysis, Large Language Modeling, Machine Learning, Performance Analysis
Intermediate · Specialization · 3 - 6 Months

Macquarie University
Skills you'll gain: Cryptography, Encryption, Network Security, Cybersecurity, Security Engineering, Network Protocols, Federated Learning, Security Management
★ 4.8 (13) · Beginner · Course · 1 - 3 Months

Royal Holloway, University of London
Skills you'll gain: Cyber Governance, Incident Management, Incident Response, Security Management, Human Factors (Security), Security Awareness, Cybersecurity, Computer Security Awareness Training, Cyber Risk
★ 4.8 (40) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Troubleshooting, Linux Administration, Linux Servers, Linux, Linux Commands, Dynamic Host Configuration Protocol (DHCP), General Networking, Network Protocols, TCP/IP, Network Administration, Ubuntu, Red Hat Enterprise Linux, Servers, System Configuration, Control Panels, Network Analysis, Command-Line Interface, YAML
Intermediate · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Linux, Network Security, Cyber Governance, IT Security Architecture, OSI Models, Incident Management, Computer Security Incident Management, Incident Response, Security Management, Linux Commands, TCP/IP, Computer Systems, Threat Modeling, Command-Line Interface, Network Protocols, Cybersecurity, Computer Networking, Human Factors (Security), Cyber Threat Intelligence, Cyber Attacks
★ 4.8 (212) · Beginner · Specialization · 3 - 6 Months
Skills you'll gain: Red Hat Enterprise Linux, Linux, Private Cloud, Linux Administration, Package and Software Management, Bash (Scripting Language), Command-Line Interface, Operating System Administration, File Systems, Linux Commands, Linux Servers, User Accounts, IBM Cloud, Unix Shell, File Management, OS Process Management, User Provisioning, Cloud Management, Virtualization, Cloud Computing
★ 4.7 (242) · Intermediate · Specialization · 3 - 6 Months

Illinois Tech
Skills you'll gain: Infrastructure As A Service (IaaS), Operating System Administration, Cloud Security, Cloud Infrastructure, Identity and Access Management, Cloud Services, AWS Identity and Access Management (IAM), Cloud Management, Cloud Computing, Incident Response, Cloud Platforms, Disaster Recovery, Cloud Computing Architecture, Cloud Applications, Microsoft Windows, Operating Systems, System Configuration, Firewall, Linux Administration, Risk Management
★ 4.7 (34) · Intermediate · Specialization · 3 - 6 Months

Total Seminars
Skills you'll gain: Security Controls, Malware Protection, Incident Response, Endpoint Security, Threat Management, Threat Detection, Incident Management, Information Technology Operations, Authentications, Hardening, Vulnerability Management, Security Testing, Security Management, Security Awareness, Security Engineering, Security Software, Human Factors (Security), Safety Standards, Operational Performance Management, Change Management
Intermediate · Course · 1 - 3 Months