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.

Packt
Skills you'll gain: Hardening, Remote Access Systems, Linux Servers, Linux Administration, Linux, Linux Commands, Authentications, Security Controls, Cryptographic Protocols, Key Management, Public Key Infrastructure, Software Installation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Vulnerability Assessments, Vulnerability Scanning, Open Web Application Security Project (OWASP), Exploitation techniques, Unix, Network Security, Cybersecurity, Information Systems Security, Network Analysis, Web Applications, Virtual Machines, Web Servers
Beginner · 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

Coursera
Skills you'll gain: Linux Commands, Linux, Unix Commands, Command-Line Interface, File Management, System Configuration, Linux Administration, Package and Software Management, DevOps
Beginner · Guided Project · Less Than 2 Hours

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

Pearson
Skills you'll gain: Virtualization, Dynamic Host Configuration Protocol (DHCP), Virtualization and Virtual Machines, Linux Administration, Linux Servers, Network Administration, Virtual Machines, Linux, Network Architecture, Information Technology, Virtual Environment, System Configuration, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, Linux, Linux Commands, Bash (Scripting Language), Linux Servers, Unix, Operating System Administration, Shell Script, Unix Shell, OS Process Management, Network Administration, Unix Commands, System Configuration, Command-Line Interface, System Monitoring, Operating Systems, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Ubuntu, Linux, Linux Administration, Linux Commands, Unix Shell, File Management, Unix Commands, Command-Line Interface, Software Installation, System Configuration, User Accounts
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

Skills you'll gain: Penetration Testing, Malware Protection, Cyber Threat Intelligence, Exploitation techniques, Cybersecurity, Intrusion Detection and Prevention, Vulnerability Assessments, Human Factors (Security), Network Analysis, Command-Line Interface
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, Package and Software Management, Linux, User Accounts, Operating System Administration, System Monitoring, Linux Commands, Amazon Web Services, Unix Commands, Network Troubleshooting, File Management, Command-Line Interface, Amazon Elastic Compute Cloud, Systems Administration, Operating Systems, Shell Script, General Networking, Service Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: Penetration Testing, Exploitation techniques, Brute-force attacks, Cyber Security Assessment, Vulnerability Assessments, Authentications, Wireless Networks, Network Security, Linux, Encryption, Microsoft Windows, Cryptography, Operating Systems
Mixed · Course · 1 - 4 Weeks