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.

Coursera
Skills you'll gain: Command-Line Interface, Linux Commands, Linux, Unix Commands, File Management, Linux Administration, File Systems
Intermediate · Guided Project · Less Than 2 Hours

Packt
Skills you'll gain: Linux Administration, Linux Servers, Virtual Networking, Infrastructure As A Service (IaaS), Security Management
Intermediate · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Linux Administration, Operating System Administration, Linux Servers, Systems Administration, System Monitoring, Linux, Performance Tuning, File Management, Data Storage Technologies, Network Troubleshooting, Remote Access Systems, User Interface (UI), User Accounts, File Systems
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Shell Script, Package and Software Management, Linux Administration, Linux Commands, Unix Shell, Systems Administration, Hardening, Unix Commands, Patch Management, Scripting, System Monitoring, User Accounts, Dynamic Host Configuration Protocol (DHCP), System Configuration, OS Process Management, Firewall, Process Management
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Apache, File Transfer Protocol (FTP), Linux Servers, Linux Administration, Linux, Web Servers, Remote Access Systems, Command-Line Interface, Unix Commands, File Management, Network Protocols, Network Performance Management, Security Controls
Intermediate · Course · 1 - 4 Weeks

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

University of California, Davis
Skills you'll gain: Secure Coding, Application Security, Verification And Validation, Code Review, Linux, Vulnerability Assessments, User Accounts, Data Validation, Debugging, Cryptography, C (Programming Language), File Management, OS Process Management
Intermediate · Course · 1 - 4 Weeks

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: User Accounts, Linux, Linux Administration, Shell Script, Linux Commands, Command-Line Interface, Operating System Administration, System Monitoring, Unix Commands, File Systems, Unix, File Management, Software Installation, Virtual Machines, System Configuration, Operating Systems, Network Troubleshooting
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Linux Servers, Linux Administration, Linux Commands, Linux, Unix Commands, Command-Line Interface, OS Process Management, Operating System Administration, Debugging, System Monitoring, DevOps, Resource Management
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Unix Shell, Unix, Unix Commands, Shell Script, Linux, Linux Administration, Authorization (Computing), System Configuration, Operating System Administration, User Accounts, Security Controls, File Management, Identity and Access Management, Systems Administration
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, Linux Servers, Web Servers, Lightweight Directory Access Protocols, Email Security, Linux, Nginx, Apache, Dynamic Host Configuration Protocol (DHCP), Operating System Administration, Server Administration, Active Directory, System Configuration, Proxy Servers, Network Security, Firewall, File Management, Identity and Access Management, Authentications
Advanced · Course · 1 - 3 Months