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.

Infosec
Skills you'll gain: Secure Coding, Application Security, Exploitation techniques, Web Applications, Javascript, Web Development, Node.JS, Java Programming
★ 4.6 (37) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: IT Security Architecture, Security Controls, Cryptography, Security Engineering, Application Security, Vulnerability Assessments, Information Systems Security, Cryptographic Protocols, Vulnerability Management, Encryption, Cybersecurity, Infrastructure Security, Computer Security, Public Key Infrastructure, Cyber Security Assessment, Data Integrity
★ 4.8 (11) · Intermediate · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Network Security, IT Security Architecture, OSI Models, TCP/IP, Threat Modeling, Network Protocols, Computer Networking, Cybersecurity, Application Security, Network Architecture, General Networking, Cryptographic Protocols, Vulnerability Assessments, Network Infrastructure, Exploit development, Network Model, Network Routing, Communication Systems
★ 4.9 (33) · Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Hardening, Incident Response, Single Sign-On (SSO), Incident Management, Threat Management, Security Management, Security Controls, Continuous Monitoring, User Provisioning, Threat Detection, Enterprise Security, Event Monitoring, Identity and Access Management, Enterprise Application Management, IT Automation, Authentications
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cryptographic Protocols, Network Security, Encryption, OSI Models, IT Security Architecture, Network Performance Management, Network Architecture, General Networking, Network Planning And Design, Communication Systems, Remote Access Systems, TCP/IP, Network Infrastructure, Network Protocols, Wireless Networks, Virtual Private Networks (VPN), Virtual Networking, Endpoint Security, Cloud Security, Software-Defined Networking
★ 4.8 (13) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Security Assessment, Security Testing, Vulnerability Assessments, Penetration Testing, White-Box Testing
★ 4.9 (10) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Continuous Monitoring, Cybersecurity, Security Management, Network Security, Event Monitoring, Security Strategy, Risk Management Framework, Internet Of Things, Cyber Risk, Threat Management, Hardening, Cyber Security Strategy, Infrastructure Security, Security Engineering, Endpoint Security, Cyber Attacks, Security Controls, Computer Hardware, Risk Analysis, Network Infrastructure
★ 4.3 (7) · Beginner · Specialization · 1 - 3 Months
Skills you'll gain: Computer Security Incident Management, Incident Management, Incident Response, Security Management, Threat Management, Security Strategy, Event Monitoring, Security Information and Event Management (SIEM), Enterprise Security, IT Automation, Automation, Systems Integration
★ 4.9 (10) · Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Red Hat Enterprise Linux, Linux, Private Cloud, Linux Administration, Package and Software Management, Bash (Scripting Language), Command-Line Interface, Operating System Administration, File Systems, Linux Commands, Linux Servers, User Accounts, IBM Cloud, Unix Shell, File Management, OS Process Management, User Provisioning, Cloud Management, Virtualization, Cloud Computing
★ 4.7 (242) · Intermediate · Specialization · 3 - 6 Months

Macquarie University
Skills you'll gain: Cryptography, Encryption, Network Security, Cybersecurity, Security Engineering, Network Protocols, Federated Learning, Security Management
★ 4.8 (13) · Beginner · Course · 1 - 3 Months
University of Michigan
Skills you'll gain: Network Security, Network Administration, Network Protocols, Network Architecture, TCP/IP, Cryptographic Protocols, General Networking, Cryptography, Computer Networking, Encryption, Web Development, Web Servers, Business Technologies, Innovation
★ 4.8 (2.8K) · Beginner · Course · 1 - 3 Months

Edureka
Skills you'll gain: Computer Security Incident Management, IT Security Architecture, DevSecOps, Cloud Management, Cloud Infrastructure, Cloud Standards
★ 4.2 (13) · Beginner · Course · 1 - 4 Weeks