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.

Google Cloud
Skills you'll gain: Vulnerability Scanning, Google App Engine, Security Testing, Vulnerability Assessments, Application Security, DevSecOps, Cloud Security, Google Cloud Platform
Beginner · Project · Less Than 2 Hours
STARWEAVER
Skills you'll gain: Open Web Application Security Project (OWASP), Security Testing, Cyber Security Strategy, Application Security, Vulnerability Scanning, Security Strategy, Penetration Testing, DevSecOps, Software Testing, Debugging, Cybersecurity, Vulnerability Assessments, Cyber Security Assessment, Secure Coding, Test Automation, Code Review, Vulnerability Management, Exploitation techniques, Technical Communication, Continuous Monitoring
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Network Troubleshooting, Network Monitoring, Network Security, Firewall, Ansible, Network Performance Management, Network Infrastructure, Network Protocols, Security Controls, Event Monitoring, Puppet (Configuration Management Tool), IT Automation, Chef (Configuration Management Tool), Real Time Data, JSON, Automation, Identity and Access Management, Restful API, Application Programming Interface (API)
★ 4.7 (6) · Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Identity and Access Management, Cloud Security, OAuth, Google Cloud Platform, Kubernetes, Cloud Storage, Authentications, Security Controls, Application Security, Authorization (Computing), Data Security, Role-Based Access Control (RBAC), Hardening, Web Applications, Vulnerability Scanning, Encryption, Key Management, Virtual Machines
★ 4.7 (351) · Intermediate · Course · 1 - 3 Months

Macquarie University
Skills you'll gain: Cyber Security Policies, Cyber Security Strategy, Cyber Risk, Security Strategy, Cybersecurity, Cyber Security Assessment, Organizational Change, Change Management, Risk Management
★ 4.9 (15) · Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Core Data (Software), Apple iOS, iOS Development, JSON, Objective-C (Programming Language), OAuth, Authentications, Mobile Development, Single Sign-On (SSO), Web Services, Secure Coding, Data Store, Cryptographic Protocols, Application Security, Data Persistence
★ 4.5 (255) · Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Responsible AI, AI Security, Data Ethics, AI Integrations, Telehealth, Health Technology, Generative AI, Health Insurance Portability And Accountability Act (HIPAA) Compliance, Healthcare Ethics, Regulatory Compliance, Health Care Procedure and Regulation, Security Strategy, Medical Privacy, AI Workflows, Data Security, Analysis, Risk Analysis, Innovation, Design
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Event Monitoring, Security Strategy, Incident Response, Security Management, Cyber Security Policies, Command-Line Interface, System Monitoring, Configuration Management, User Interface (UI), Simulations
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Database Management, Database Architecture and Administration, Apache Hadoop, Database Theory, Query Languages, Database Management Systems, Big Data, Databases, SQL, Data Access, Distributed Computing, Data Processing, Data Integrity, Authorization (Computing), Data Storage Technologies, File Systems, Algorithms
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Metasploit, Brute-force attacks, System Configuration, General Networking, Network Security, Penetration Testing, Wireless Networks, Exploitation techniques, Intrusion Detection and Prevention, Linux, Vulnerability Scanning, Linux Commands, Encryption, Network Analysis, Software Installation, Virtual Machines
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Kubernetes, Authentications, Role-Based Access Control (RBAC), Enterprise Security, Multi-Tenant Cloud Environments, Key Management, Security Controls, OAuth, Identity and Access Management, Authorization (Computing), Encryption, User Accounts, YAML, Proxy Servers
Advanced · Course · 1 - 3 Months
STARWEAVER
Skills you'll gain: Threat Modeling, Open Web Application Security Project (OWASP), Secure Coding, Application Security, Application Design, Cloud Security, Security Testing, Application Development, IT Security Architecture, Cloud Standards, Security Controls, Hybrid Cloud Computing, Cloud-Native Computing, Multi-Cloud, Software Development, Continuous Monitoring, CI/CD, Containerization, Dependency Analysis, Supply Chain
Intermediate · Course · 1 - 3 Months