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, Computer Programming Tools, C++ (Programming Language), Software Development Tools, Programming Principles, C (Programming Language), Debugging
Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Cryptography, Cybersecurity, Encryption, Key Management, Public Key Cryptography Standards (PKCS), Data Integrity
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: MongoDB, Node.JS, Angular, Restful API, API Design, NoSQL, Bootstrap (Front-End Framework), Database Development, Scalability, JavaScript Frameworks, Authentications, Query Languages, Web Applications, Authorization (Computing), JSON, Javascript and jQuery, Database Management, Security Controls, Distributed Computing, Web Design and Development
Beginner · Specialization · 3 - 6 Months

University of Colorado System
Skills you'll gain: Requirements Analysis, User Requirements Documents, Software Development Methodologies, Requirements Elicitation, Agile Methodology, Functional Requirement, Software Design Documents, System Requirements, Software Development Life Cycle, Verification And Validation, Technical Communication
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: MITRE ATT&CK Framework, Threat Modeling, Cyber Threat Intelligence, Penetration Testing, Threat Detection, Cybersecurity, Cyber Security Strategy, Vulnerability Scanning, Cyber Attacks, Vulnerability Assessments, Network Security, Network Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Employee Surveys, Surveys, User Feedback, Security Awareness, Cloud Security, Business Software, Data Sharing, Email Automation, Collaborative Software, Business Technologies
Beginner · Guided Project · Less Than 2 Hours

University of Copenhagen
Skills you'll gain: Data Literacy, Data Ethics, Artificial Intelligence and Machine Learning (AI/ML), Journalism, Analytical Skills, Big Data, Information Privacy, Data-Driven Decision-Making, Data Security, Law, Regulation, and Compliance, Algorithms
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Internet Of Things, Cloud Computing Architecture, API Design, Amazon Web Services, Network Protocols, Embedded Software, Telecommunications, Middleware, Application Programming Interface (API), Application Security, Microservices, Cloud Services, Cloud Platforms, Cybersecurity, Wireless Networks
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Kubernetes, CI/CD, Application Design, Application Deployment, Full-Stack Web Development, Back-End Web Development, Cloud Applications, Cloud Development, Front-End Web Development, Serverless Computing, Node.JS, Restful API, Application Development, HTML and CSS, Microservices, Software Architecture, User Accounts, Docker (Software), Django (Web Framework), Javascript
Advanced · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Test Tools, Security Information and Event Management (SIEM), Event Monitoring, Malware Protection, Network Security
Beginner · Project · Less Than 2 Hours

KodeKloud
Skills you'll gain: Version Control, Git (Version Control System), GitHub, Collaborative Software, DevOps, Software Development Tools, Linux, Open Source Technology
Beginner · Course · 1 - 4 Weeks
Google Cloud
Skills you'll gain: Istio, Kubernetes, CI/CD, Serverless Computing, Multi-Cloud, Hybrid Cloud Computing, Application Deployment, Google Cloud Platform, Cloud-Native Computing, Cloud Infrastructure, Containerization, Network Security, Continuous Deployment, Cloud Management, Cloud Applications, Microservices, Continuous Integration, Cloud Computing Architecture, Identity and Access Management, Microsoft Azure
Intermediate · Specialization · 3 - 6 Months