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 Architecture, Wireless Networks, Emerging Technologies, Communication Systems, Network Planning And Design, General Networking, Telecommunications, Network Infrastructure, Artificial Intelligence and Machine Learning (AI/ML), Real Time Data
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Incident Response, Computer Security Incident Management, Incident Management, Intrusion Detection and Prevention, Threat Detection, Event Monitoring, Threat Management, Security Information and Event Management (SIEM), Security Management, Cyber Threat Intelligence, Continuous Monitoring, Document Management, Cybersecurity, Technical Documentation, NIST 800-53
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Microsoft SQL Servers, Data Security, Microsoft Azure, Cloud Security, Database Management, Data Management, Data Access, Role-Based Access Control (RBAC)
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Network Troubleshooting, Hardware Troubleshooting, Cloud Computing, Cloud Infrastructure, Virtualization, Computer Hardware, Network Protocols, Virtual Machines, General Networking, Network Administration, Network Security, Cloud Storage, Desktop Support, Hardware Architecture, TCP/IP, Peripheral Devices, Wireless Networks, Mobile Security, USB, Networking Hardware
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Computer Hardware, Virtualization, Cloud Computing, General Networking, Virtual Machines, Hardware Troubleshooting, Networking Hardware, Network Troubleshooting, Network Protocols, TCP/IP, Mobile Security, Dynamic Host Configuration Protocol (DHCP), Wireless Networks, Peripheral Devices, System Configuration, Data Storage Technologies
Beginner · Course · 1 - 3 Months

Packt
Skills you'll gain: Spring Boot, Hibernate (Java), Web Applications, Application Development, Restful API, Application Frameworks, Bootstrap (Front-End Framework), Development Environment, Model View Controller, Java Platform Enterprise Edition (J2EE), Authentications, User Interface (UI), Databases
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Development, Serverless Computing, Google Cloud Platform, Cloud Applications, Cloud Services, Application Development, Containerization, Cloud Security, Application Deployment, Identity and Access Management, Integration Testing, Scalability
Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Network Architecture, Network Protocols, Wireless Networks, Network Performance Management, Network Planning And Design, Network Infrastructure, Communication Systems, Telecommunications, Emerging Technologies
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: GitHub, Git (Version Control System), Version Control, Unix Commands, Unix Shell, Software Versioning, Linux Commands, Command-Line Interface, Devops Tools, Collaborative Software, Code Review, Software Configuration Management, Software Development Tools, Secure Coding, File Management, Technical Documentation, Software Documentation
Intermediate · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Intrusion Detection and Prevention, Threat Detection, Endpoint Detection and Response, Distributed Denial-Of-Service (DDoS) Attacks, Threat Management, Anomaly Detection, Continuous Monitoring, System Monitoring, Virtual Machines, Network Security, Event Monitoring, Network Monitoring, Network Analysis
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Kubernetes, Microsoft Azure, Docker (Software), YAML, Containerization, Application Deployment, Cloud Deployment, Security Controls, Virtual Networking, General Networking, Command-Line Interface
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Penetration Testing, Vulnerability Scanning, Cyber Security Assessment, Vulnerability Assessments, MITRE ATT&CK Framework, Threat Detection, Infrastructure Security, Payment Card Industry (PCI) Data Security Standards, NIST 800-53, Network Analysis, General Data Protection Regulation (GDPR)
Intermediate · Course · 1 - 4 Weeks