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.

Pearson
Skills you'll gain: Linux Administration, Linux, Authorization (Computing), System Configuration, Network Routing, Network Troubleshooting, Network Administration, Network Analysis, Network Protocols, File Systems, Service Management, OS Process Management
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Command-Line Interface, Linux, Ubuntu, Linux Administration, Linux Commands, Unix Commands, Operating System Administration, Unix, Software Installation, Red Hat Enterprise Linux, System Configuration, Network Troubleshooting, User Accounts, Networking Hardware, Network Support, File Systems, Open Source Technology, File Management, Package and Software Management, Computing Platforms
Beginner · Course · 1 - 3 Months

Skills you'll gain: Shell Script, User Accounts, Linux Administration, Linux, Unix Shell, Linux Commands, Unix, Operating System Administration, File Systems, Performance Tuning, Systems Administration, Scripting, File Management, Data Storage, Authorization (Computing), Command-Line Interface, Operating Systems, System Monitoring
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Red Hat Enterprise Linux, Package and Software Management, Network Administration, Cloud Deployment
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Penetration Testing, Exploitation techniques, Cyber Security Assessment, Unix, Computer Security, Vulnerability Assessments, Unix Commands, System Programming, Shell Script, Linux, Debugging
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Linux, Linux Administration, File Systems, Ubuntu, Remote Access Systems, Operating System Administration, Linux Commands, File Management, Red Hat Enterprise Linux, System Configuration, Unix, Software Installation, Command-Line Interface, Operating Systems, Unix Commands, Systems Administration, Authorization (Computing), Virtualization, Virtual Machines, Open Source Technology
Beginner · Course · 1 - 3 Months

Skills you'll gain: Penetration Testing, Cyber Security Assessment, Vulnerability Scanning, Cybersecurity, Vulnerability Assessments, Network Analysis, Exploitation techniques, Linux, Virtual Machines, Operating Systems
Mixed · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Package and Software Management, Linux Administration, Linux, Linux Commands, Operating System Administration, OS Process Management, Systems Administration, Remote Access Systems, System Configuration, Network Administration, General Networking, Software Installation, Network Protocols
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Software Testing, Open Web Application Security Project (OWASP), Business Logic, Secure Coding, Cryptography, Cybersecurity, Test Case, Identity and Access Management, Authentications, Vulnerability Assessments, Threat Modeling, Encryption, Data Validation, Network Protocols, Authorization (Computing), Web Applications
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Package and Software Management, Linux Administration, File Systems, Linux, User Accounts, Operating System Administration, Linux Commands, User Provisioning, Unix, Bash (Scripting Language), Systems Administration, File Management, TCP/IP, Unix Shell, Data Storage, Unix Commands, Software Installation, General Networking, Command-Line Interface, IBM Cloud
Advanced · Course · 1 - 3 Months

Skills you'll gain: Lightweight Directory Access Protocols, Git (Version Control System), Authentications, Collaborative Software, Linux Servers, Linux Administration, Version Control, Authorization (Computing), Open Source Technology
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Operating System Administration, Storage vMotion, IT Automation, Hardening, Package and Software Management, Network Troubleshooting, Command-Line Interface
Intermediate · Course · 1 - 3 Months