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.

Skills you'll gain: Linux Administration, Ubuntu, Hardening, Linux Servers, Linux, Linux Commands, Application Security, Operating System Administration, Security Controls, Service Management, Patch Management, Systems Administration, Information Systems Security, Package and Software Management
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Package and Software Management, Linux Administration, Shell Script, Ubuntu, User Accounts, Linux, Unix Shell, Linux Servers, Linux Commands, Unix, Red Hat Enterprise Linux, Bash (Scripting Language), Kubernetes, Command-Line Interface, Network Troubleshooting, Containerization, Ansible, File Systems, Application Deployment, Authentications
Intermediate · Specialization · 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

Board Infinity
Skills you'll gain: Vulnerability Assessments, Cyber Security Assessment, Network Monitoring, Penetration Testing, Virtual Private Networks (VPN), Command-Line Interface, Linux Commands, Cybersecurity, Linux, Software Installation, Intrusion Detection and Prevention, Network Security, Network Analysis
Intermediate · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Git (Version Control System), Package and Software Management, Linux Administration, Containerization, Bash (Scripting Language), Version Control, File Systems, Ubuntu, Linux Servers, Linux, Docker (Software), Operating System Administration, Linux Commands, User Accounts, Command-Line Interface, Shell Script, Ansible, Firewall, Systems Administration, Microsoft Windows
Intermediate · Specialization · 1 - 3 Months
Skills you'll gain: Application Security, OAuth, Data Validation, Authentications, Security Testing, Secure Coding, Web Applications, Authorization (Computing), Vulnerability Scanning, Cyber Attacks, Distributed Denial-Of-Service (DDoS) Attacks, Server Side, Security Strategy
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, Ubuntu, Lightweight Directory Access Protocols, File Systems, Linux, Linux Commands, Bash (Scripting Language), Linux Servers, Firewall, Virtual Machines, Package and Software Management, Virtualization, Remote Access Systems, Unix, File Management, Operating System Administration, Unix Shell, Shell Script, Containerization, Git (Version Control System)
Intermediate · Specialization · 1 - 3 Months

Illinois Tech
Skills you'll gain: Infrastructure As A Service (IaaS), Operating System Administration, Cloud Security, Cloud Infrastructure, Identity and Access Management, AWS Identity and Access Management (IAM), Cloud Management, Cloud Computing, Incident Response, Disaster Recovery, Cloud Deployment, Microsoft Windows, DevOps, Cloud-Native Computing, Operating Systems, System Configuration, Firewall, Cloud Computing Architecture, Linux, Risk Management
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Infosec
Skills you'll gain: Linux Administration, Version Control, Linux, Git (Version Control System), Linux Commands, Network Troubleshooting, Operating System Administration, Bash (Scripting Language), Systems Administration, Scripting, Shell Script, User Accounts, System Configuration, Unix Shell, Network Administration, Network Performance Management, Hardware Troubleshooting, File Management, Unix Commands, General Networking
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Virtual Networking, Network Troubleshooting, Linux, Kubernetes, Network Architecture, Network Administration, Computer Networking, Docker (Software), TCP/IP, Network Routing, Containerization, Network Switches, Firewall, Network Protocols
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: File Management, OS Process Management, Linux, Linux Servers, Data Security, Linux Commands, Information Systems Security, System Monitoring, Data Storage Technologies, Network Security, Vulnerability Scanning, Data Storage, Encryption, Network Analysis
Intermediate · Course · 1 - 4 Weeks

KodeKloud
Skills you'll gain: Package and Software Management, Command-Line Interface, Linux Commands, Linux, Linux Administration, Unix Commands, File Systems, Data Storage, Network Troubleshooting, Operating Systems, Remote Access Systems, Operating System Administration, System Support, Software Installation, File Management, Service Management, General Networking, DevOps, Network Security, User Accounts
Beginner · Course · 1 - 3 Months