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: Salesforce, Salesforce Development, Systems Integration, Customer Relationship Management, Customer Relationship Management (CRM) Software, Data Integration, Contract Management, AI Enablement, Responsible AI, Web Services, Business Reporting, Sales Operations, Integration Testing, Artificial Intelligence, Application Programming Interface (API), Software Design Patterns, Security Controls, Customer Data Management, Analytics, Data Security
Advanced · Specialization · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Process Driven Development, Software Quality Assurance, Process Management, Software Development, Embedded Software, Verification And Validation, Software Development Life Cycle, Systems Development Life Cycle, Configuration Management, Requirements Analysis, Risk Management Framework, Change Requests, Quality Control, Continuous Monitoring
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: File Management, Computer Literacy, Microsoft Office, Email Security, Computer Hardware, Computer Security Awareness Training, Spreadsheet Software, digital literacy, Information Management, Safety and Security
Intermediate · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: General Networking, Network Architecture, Internet Of Things, Network Routers, Network Infrastructure, TCP/IP, Wireless Networks, Local Area Networks, Network Switches, Network Protocols, Network Performance Management, Virtual Local Area Network (VLAN), Data Structures, Network Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Microsoft Azure, Cyber Security Policies, Cloud Security, Firewall, Cyber Attacks, Cybersecurity, Malware Protection, Identity and Access Management, Network Security, Threat Management, Security Information and Event Management (SIEM), Threat Detection, Security Controls, Scenario Testing, Virtual Machines, Encryption, Event Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Jenkins, CI/CD, Apache Tomcat, Apache Maven, Docker (Software), Continuous Integration, Application Lifecycle Management, Shell Script, Continuous Deployment, Application Deployment, DevOps, Continuous Delivery, Command-Line Interface, Git (Version Control System)
Intermediate · Course · 1 - 4 Weeks

Banco Interamericano de Desarrollo
Skills you'll gain: Digital Transformation, Cybersecurity, Data Management, Big Data, Talent Management, Interoperability, Business Transformation, Technology Strategies, Analytics, Data Security, Project Design, Public Policies, Policy Development, Public Administration, Service Design, Data-Driven Decision-Making, Governance, Economic Development, Process Improvement, Project Management
Beginner · Specialization · 1 - 3 Months

Edureka
Skills you'll gain: Performance Tuning, Web Development, Web Services, Web Applications, Object Oriented Design, Software Architecture, Microservices, Network Security, Data Structures
Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Requirements Elicitation, Requirements Analysis, Mockups, Interviewing Skills, Storyboarding, Business Requirements, Prototyping, User Requirements Documents, User Research, Stakeholder Analysis, Information Architecture, Prioritization
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Real-Time Operating Systems, Embedded Systems, Internet Of Things, System Requirements, Software Engineering, System Testing, Software Development, Verification And Validation, Cloud Infrastructure, Integration Testing, Performance Testing, Systems Integration, System Implementation, Requirements Analysis, Innovation, Algorithms
Advanced · Course · 1 - 4 Weeks

Università di Napoli Federico II
Skills you'll gain: Market Liquidity, Securities Trading, Financial Trading, Financial Market, Market Dynamics, Equities, Market Data, Technical Analysis, Financial Regulation, Order Processing, Algorithms
Intermediate · Course · 1 - 3 Months

Università di Napoli Federico II
Skills you'll gain: Political Sciences, International Relations, World History, Diplomacy, Social Sciences, Public Safety and National Security, European History, Environmental Issue, Conflict Management, Climate Change Programs, Governance, Economics, Economic Development, Trend Analysis, Security Strategy
Beginner · Course · 1 - 3 Months