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.

Coursera
Skills you'll gain: Surveys, Employee Surveys, User Feedback, Work Order, Self Service Technologies, IT Management, User Accounts, Workflow Management, Customer Communications Management
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Unified Modeling Language, Visual Basic (Programming Language), Data Structures, Object Oriented Design, Data Modeling, Microsoft Visual Studio, Program Development, Object Oriented Programming (OOP), .NET Framework, Computer Programming
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Power BI, Data Analysis Expressions (DAX), Interactive Data Visualization, Data Storytelling, Dashboard, Data Visualization Software, Business Intelligence, Data Security, Data Integration, Data Transformation, Data Management, Data Modeling, Data Cleansing, Software Installation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Risk Management, Risk Analysis, Business Risk Management, Governance Risk Management and Compliance, Legal Risk, Blockchain, Cyber Risk, Information Technology Architecture, Governance, Application Security, Project Documentation, Technical Documentation, Solution Architecture, Compliance Management, Security Engineering, Regulatory Requirements, Financial Regulations, Network Security, Contract Review, Data Governance
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Routing Protocols, Virtual Private Networks (VPN), Network Troubleshooting, Open Shortest Path First (OSPF), Network Engineering, Network Routing, Border Gateway Protocol, TCP/IP, Network Infrastructure, Multiprotocol Label Switching, Network Administration, Wide Area Networks, Network Security, Network Monitoring, Firewall, Network Performance Management, Dynamic Host Configuration Protocol (DHCP), Authentications, Authorization (Computing)
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Spring Boot, Database Design, Object-Relational Mapping, Application Frameworks, Data Modeling, Database Development, Java Platform Enterprise Edition (J2EE), Application Development, Database Architecture and Administration, Requirements Analysis
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Prompt Engineering, Microsoft Copilot, Docker (Software), ChatGPT, Google Gemini, OpenAI, Development Environment, GitHub, Integrated Development Environments, Generative AI, Git (Version Control System), Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Microsoft Azure, Role-Based Access Control (RBAC), Azure Active Directory, Load Balancing, Cloud Infrastructure, Network Architecture, Authorization (Computing), Database Management, Data Security, Relational Databases, Authentications, Identity and Access Management, Cloud Computing, Cloud Computing Architecture, Disaster Recovery, Data Storage Technologies, Cloud Management, Cloud Security, Single Sign-On (SSO), General Networking
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Embedded Systems, Embedded Software, Electronic Systems, Computer Systems, Internet Of Things, Automation, System Programming, Control Systems, C (Programming Language), Programmable Logic Controllers, Hardware Architecture, Power Electronics, Peripheral Devices, Wireless Networks, Medical Devices, Electrical Systems, Computer Architecture, Health Technology, Electronics, Maintenance, Repair, and Facility Services
Intermediate · Specialization · 3 - 6 Months

Packt
Skills you'll gain: Cyber Security Assessment, Cybersecurity, Vulnerability Assessments, Persona Development, Coordination, Safety and Security
Intermediate · Course · 3 - 6 Months

Princeton University
Skills you'll gain: Health Disparities, Food and Beverage, Social Justice, Ethical Standards And Conduct, Nutrition and Diet, Sustainability Standards, International Relations, Environmental Issue, Policy Analysis, Sustainable Development, Cultural Diversity
Beginner · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Cloud Security, Key Management, Encryption, Cloud Storage, Cloud API, Data Governance, Google Cloud Platform, Data Security
Beginner · Project · Less Than 2 Hours