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: Network Troubleshooting, Display Devices, Cloud Computing Architecture, Networking Hardware, Dynamic Host Configuration Protocol (DHCP), Cloud Computing, Firewall, Virtual Networking, Mobile Security, Network Infrastructure, USB, Computer Networking, Cloud Services, Augmented Reality, Microarchitecture, Network Routers, IT Infrastructure, System Configuration, Data Storage, Memory Management
★ 4.6 (89) · Intermediate · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Amazon S3, Amazon Web Services, Cloud Hosting, Cloud Storage, Version Control, Encryption, Data Storage, Cloud Security
★ 4.5 (1.3K) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: WordPress, Web Design, Web Analytics and SEO, Content Management Systems, Web Content, Frontend Performance, Cloud Hosting, Web Servers, Web Development, Security Controls, Content Management, Application Security, Computing Platforms, Software Installation, Role-Based Access Control (RBAC), User Accounts
★ 4.4 (34) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Computer Security Incident Management, Vulnerability Assessments, Cyber Operations, Cybersecurity, Cyber Threat Intelligence, Cyber Attacks, Cyber Security Strategy, IT Security Architecture, MITRE ATT&CK Framework, Cyber Threat Hunting, Threat Detection, Cyber Security Assessment, Network Security, Application Security, DevSecOps, Malware Protection, Security Management, Cloud Security, Encryption, Authentications
★ 4.5 (20) · Intermediate · Specialization · 1 - 3 Months

University of Colorado System
Skills you'll gain: Digital Communications, OSI Models, Network Protocols, TCP/IP, Communication Systems, Telecommunications, Network Routing, Network Architecture, Network Planning And Design, General Networking, Computer Networking, Network Infrastructure, System Programming, Application Programming Interface (API), Data Integrity
★ 4.6 (2.4K) · Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Dataflow, Data Pipelines, Serverless Computing, Identity and Access Management, Google Cloud Platform, Site Reliability Engineering, Cloud Security, Performance Tuning, Data Security, CI/CD, Data Processing, Debugging, Real Time Data, System Monitoring, Cloud Storage, Development Testing, Unit Testing, Containerization, File I/O, Data Transformation
★ 4 (130) · Intermediate · Specialization · 3 - 6 Months

University of Michigan
Skills you'll gain: Cyber Security Policies, Security Engineering, Information Systems Security, Human Factors (Security), Computer Security, Network Security, Cybersecurity, Security Awareness, Vulnerability, Threat Modeling, Policy Analysis, Political Sciences, Security Controls, Vulnerability Assessments, Public Policies, Safety and Security, Human Factors, Cryptography, Usability, Software Testing
★ 4.8 (171) · Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Software Design, Systems Development Life Cycle, Software Development Life Cycle, Application Security, Technical Design, Security Engineering, Software Development Methodologies, Conceptual Design, Waterfall Methodology, Requirements Analysis, Agile Methodology
★ 4.6 (253) · Mixed · Course · 1 - 3 Months
Amazon Web Services
Skills you'll gain: Amazon Web Services, Data Migration, Cloud Management, Cloud Infrastructure, Cloud Security, Data Import/Export, Cloud Computing, Cloud Services, Cloud Applications, Cloud Computing Architecture, Infrastructure Architecture, Cloud Deployment, Managed Services
★ 4.5 (256) · Intermediate · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: Software Documentation, LLM Application, Collaborative Software, Software Testing, Technical Documentation, Large Language Modeling, AI Integrations, Dependency Analysis, Security Testing, AI literacy, Package and Software Management, Debugging, Software Engineering
★ 4.6 (179) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Virtual Machines, Microsoft Azure, Infrastructure As A Service (IaaS), Cloud Infrastructure, Cloud Computing Architecture, Virtualization and Virtual Machines, Cloud Deployment, Firewall, Cloud Computing, Network Security, Virtual Networking, Web Servers, Network Administration, Remote Access Systems, Application Deployment
★ 4.6 (221) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Requirements Elicitation, Requirements Analysis, Stakeholder Engagement, Requirements Management, Business Analysis, Stakeholder Management, Performance Improvement, Business Requirements, Stakeholder Communications, Case Studies, Stakeholder Analysis, Project Performance, Governance, Business Process Modeling, Strategic Planning, Problem Solving
★ 4.8 (129) · Beginner · Course · 1 - 4 Weeks