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, User Accounts, Operating System Administration, Linux, Unix, Linux Servers, Linux Commands, User Provisioning, File Systems, Systems Administration, Authorization (Computing), Security Controls, Data Storage, Identity and Access Management, File Management, System Configuration, Operating Systems, Data Storage Technologies
Intermediate · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Secure Coding, Application Security, C and C++, Linux Administration, Verification And Validation, Code Review, Vulnerability Management, Linux, Security Controls, Vulnerability Assessments, Unix, User Accounts, Data Validation, File I/O, Cryptography, File Systems, System Programming, C (Programming Language), Identity and Access Management, Encryption
★ 4.6 (81) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Vulnerability Scanning, Network Security, Penetration Testing, Configuration Management, System Configuration, Firewall, Linux Commands, Servers, Command-Line Interface, TCP/IP, Network Analysis, Software Versioning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: File Systems, Linux, Linux Commands, File Management, Linux Administration, Operating Systems, Unix, Command-Line Interface, Authorization (Computing), Data Storage
★ 4.7 (20) · Intermediate · Guided Project · Less Than 2 Hours

Pearson
Skills you'll gain: Package and Software Management, Linux Administration, Linux, Linux Commands, Linux Servers, Operating System Administration, Red Hat Enterprise Linux, Ubuntu, OS Process Management, Systems Administration, Remote Access Systems, System Configuration, Network Monitoring, Network Administration, General Networking, Software Installation, Performance Tuning, Service Management, Network Protocols
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Penetration Testing, Vulnerability Scanning, Vulnerability Assessments, Cyber Security Assessment, Exploitation techniques, Malware Protection, Security Testing, Mobile Security, Test Script Development, Scripting, Android (Operating System), Human Factors (Security), Scripting Languages, Authentications, Network Analysis, Automation, Virtual Networking, Virtual Environment
★ 4.8 (13) · Mixed · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Package and Software Management, Command-Line Interface, Ubuntu, Linux, Linux Administration, grep, Linux Commands, Red Hat Enterprise Linux, File Systems, Software Installation, File Management, Virtual Environment, Open Source Technology
★ 4.4 (18) · Beginner · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Virtual Networking, Virtualization, Dynamic Host Configuration Protocol (DHCP), Virtualization and Virtual Machines, Linux Administration, Linux Servers, Lightweight Directory Access Protocols, Network Administration, Virtual Machines, Linux, Network Architecture, Information Technology, Network Planning And Design, Virtual Environment, System Configuration, Linux Commands, Server Administration, Remote Access Systems, Software Installation
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Package and Software Management, Linux Administration, File Systems, Linux, Linux Servers, 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, IBM Cloud
Advanced · Course · 1 - 3 Months

Skills you'll gain: Penetration Testing, Exploitation techniques, Network Security, Intrusion Detection and Prevention, Hardening, Local Area Networks, Threat Detection, General Networking, Vulnerability Management, System Configuration, Linux Administration, Authentications, Software Installation, Virtual Machines, Network Analysis, Virtualization
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Linux Commands, Linux, Command-Line Interface, File Management, Unix Shell, Linux Administration, Package and Software Management, DevOps
★ 4.5 (160) · Beginner · Guided Project · Less Than 2 Hours