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.

University of London
Skills you'll gain: Cryptography, Application Security, Cybersecurity, Encryption, Vulnerability Assessments, Key Management, Public Key Cryptography Standards (PKCS), Authentications, Mobile Security, Data Integrity
Build toward a degree
Beginner · Course · 1 - 4 Weeks
University of London
Skills you'll gain: Computer Science, Computer Systems, Web Applications, Computer Literacy, Network Security, Computer Networking, Computational Thinking, Debugging, Web Design and Development, Cybersecurity, Problem Management, Software Architecture, Data Storage
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: File Systems, Microsoft Windows, Cybersecurity, TCP/IP, Network Protocols, Data Security, Litigation Support, File Management, Network Security, Operating Systems, Data Structures, General Networking, Data Validation, Record Keeping, System Software, Data Integrity, Data Analysis Software, User Accounts, USB, System Configuration
Intermediate · Specialization · 3 - 6 Months

Google Cloud
Skills you'll gain: Identity and Access Management, Cloud Computing, Cloud Management, Cloud Solutions, Google Cloud Platform, Cloud Infrastructure, Cloud Security, Application Deployment, Cloud Applications, Cloud Storage
Intermediate · Course · 1 - 3 Months
Google Cloud
Skills you'll gain: Data Governance, Data Loss Prevention, Gmail, Google Workspace, Information Management, Data Management, Data Security, Document Management, Records Management, Data Storage, Data Access, Data Import/Export, Email Security, System Configuration
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Data Security, Cybersecurity, Cyber Attacks, Data Ethics, Authentications, Authorization (Computing), Cryptography, Human Factors (Security), Security Controls, Security Awareness, Information Privacy, Threat Modeling, Computer Security Incident Management, Risk Analysis, Technical Communication, Problem Solving, Communication
Build toward a degree
Beginner · Course · 1 - 3 Months

Dartmouth College
Skills you'll gain: C (Programming Language), Embedded Systems, Computer Engineering, Embedded Software, System Programming, Computer Science, Computer Programming, Operating Systems, Visualization (Computer Graphics), Data Structures, Linux
Beginner · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Microsoft Copilot, Regulation and Legal Compliance, Data Ethics, Generative AI, Responsible AI, Data Governance, Microsoft 365, Customer Relationship Management (CRM) Software, Marketing Automation, Microsoft Office, Customer experience improvement, Business Process Automation, Compliance Management, Sales Process, Customer Service, Information Privacy, Artificial Intelligence and Machine Learning (AI/ML), Productivity Software, Critical Thinking
Beginner · Specialization · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Network Infrastructure, General Networking, Network Protocols, Network Routers, Network Architecture, Internet Of Things, Wireless Networks, Local Area Networks, Wide Area Networks, Network Switches, Virtual Local Area Network (VLAN), Network Planning And Design, Network Security
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Threat Management, Threat Modeling, Vulnerability Assessments, Incident Response, Computer Security Incident Management, Public Key Infrastructure, IT Security Architecture, Disaster Recovery, Vulnerability Management, Regulation and Legal Compliance, Threat Detection, Cyber Security Assessment, Risk Management, Compliance Management, Regulatory Compliance, Network Security, Infrastructure Security, Cloud Security, Hardening, Software-Defined Networking
Beginner · Specialization · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Software Development Methodologies, Agile Methodology, Software Engineering, Software Development Life Cycle, Requirements Analysis, Application Deployment, Agile Software Development, Systems Development, Software Architecture, Verification And Validation, Process Driven Development, Waterfall Methodology, System Requirements, Software Testing, Scrum (Software Development), Release Management, User Requirements Documents, Development Testing, Software Design, Maintainability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Threat Modeling, Cyber Governance, Cybersecurity, Cyber Security Policies, Cryptography, Network Security, Cyber Risk, Cyber Attacks, Cyber Security Strategy, Threat Detection, Vulnerability Assessments, Incident Response
Beginner · Course · 1 - 4 Weeks