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.

Macquarie University
Skills you'll gain: Cryptography, Encryption, Data Security, Cybersecurity, Application Security, Key Management, Network Security, Public Key Infrastructure, Data Encryption Standard, Security Engineering, Blockchain, Wireless Networks, Security Management, Virtual Private Networks (VPN), Intellectual Property, Data Integrity, Authentications, Hardware Architecture, Emerging Technologies
Beginner · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Cloud Security, Identity and Access Management, AWS Identity and Access Management (IAM), Incident Response, Cloud Computing, Cloud Computing Architecture, Data Security, Application Security, Network Security, Encryption, Role-Based Access Control (RBAC), Amazon Web Services, Key Management, Infrastructure Security, Security Controls, Firewall, Continuous Monitoring, Multi-Factor Authentication
Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Windows Servers, Computer Security, Linux Administration, Contingency Planning, Disaster Recovery, Authorization (Computing), Linux, Linux Servers, Microsoft Windows, Authentications, Business Continuity Planning, Enterprise Application Management, OSI Models, User Accounts, Group Policy, Security Management, Operating System Administration, Systems Administration, Virtualization, Cybersecurity
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Risk Analysis, Risk Management, Cybersecurity, Network Security, Incident Response, Cloud Security, Risk Management Framework, Authentications, Business Continuity Planning, Application Security, IT Management, Security Management, Threat Modeling, Threat Management, OSI Models, Disaster Recovery, Cryptography, Encryption, Cyber Risk, Vulnerability Assessments
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Public Key Infrastructure, Cloud Security, Hardening, Infrastructure Security, Application Security, Information Systems Security, Network Security, Cyber Security Assessment, System Configuration, Cryptography, Encryption, Mobile Security
Intermediate · Course · 1 - 4 Weeks

Fortinet, Inc.
Skills you'll gain: Network Troubleshooting, Firewall, Network Monitoring, Network Security, Virtual Private Networks (VPN), Network Performance Management, Lightweight Directory Access Protocols, System Monitoring, Authentications, Performance Tuning, System Configuration, Cybersecurity, Malware Protection
Intermediate · Course · 1 - 3 Months

Arizona State University
Skills you'll gain: Cyber Attacks, Data Security, Safety and Security, Cybersecurity, Computer Security Awareness Training, Information Systems Security, Security Strategy, Security Controls, Threat Modeling, Disaster Recovery, Data Loss Prevention, Incident Response, Vulnerability Assessments, Patch Management
Mixed · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Continuous Monitoring, Cybersecurity, Security Management, Network Security, Security Strategy, Risk Management Framework, Internet Of Things, Cyber Risk, Threat Management, Cyber Security Strategy, Infrastructure Security, Hardware Architecture, Security Engineering, Encryption, Communication Systems, Wireless Networks, Information Systems Security, Vulnerability Assessments, Risk Analysis, Network Infrastructure
Beginner · Specialization · 1 - 3 Months

University of London
Skills you'll gain: Network Security, OSI Models, TCP/IP, Threat Modeling, Network Protocols, Computer Networking, Cybersecurity, Application Security, Network Architecture, Cryptographic Protocols, Vulnerability Assessments, Network Infrastructure, Network Routing
Beginner · Course · 1 - 3 Months

Skills you'll gain: Malware Protection, Computer Security Awareness Training, Cybersecurity, Security Awareness, Data Security, Network Security, Human Factors (Security), Personally Identifiable Information, Email Security, Wireless Networks, User Accounts
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Application Security, Web Applications, Javascript, Web Development, Node.JS, Web Servers, Hypertext Markup Language (HTML), Java Programming
Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Vendor Management, Security Management, Supplier Management, Risk Analysis, Security Awareness, Cyber Security Strategy, Risk Management, Threat Management, Human Factors (Security), Asset Protection, Due Diligence, Training Programs
Mixed · Course · 1 - 4 Weeks