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.

Queen Mary University of London
Skills you'll gain: General Data Protection Regulation (GDPR), Cloud Services, Legal Risk, Cloud Computing, Tax, Tax Laws, Law, Regulation, and Compliance, Intellectual Property, Cloud Security, Personally Identifiable Information, Tax Compliance, Data Security, Regulation and Legal Compliance, Information Privacy, Contract Negotiation, Cloud Storage, Corporate Tax, Cyber Governance, Cyber Security Policies, Cybersecurity
★ 4.9 (182) · Beginner · Specialization · 1 - 3 Months

DeepLearning.AI
Skills you'll gain: Data Storytelling, Google Sheets, Data Visualization, Statistical Visualization, Spreadsheet Software, Large Language Modeling, Data Literacy, Data Presentation, Data Visualization Software, Requirements Elicitation, LLM Application, Business Analysis, Requirements Analysis, Data Analysis, Analytics, Business Requirements, Analytical Skills, Exploratory Data Analysis, Data-Driven Decision-Making, Productivity Software
★ 4.8 (202) · Beginner · Course · 1 - 4 Weeks

The State University of New York
Skills you'll gain: Persuasive Communication, Emergency Response, Conflict Management, Mediation, Crisis Intervention, Cultural Responsiveness, Leadership, Clinical Leadership, Interviewing Skills, Safety and Security, Intercultural Competence, De-escalation Techniques, Hazard Communication (HazCom), Cultural Sensitivity, Risk Management, Communication, Social Determinants Of Health, Cultural Diversity, Team Collaboration, Public Health
★ 4.7 (295) · Beginner · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Network Monitoring, Network Performance Management, Network Administration, Network Security, Routing Protocols, Network Troubleshooting, OSI Models, TCP/IP, Computer Networking, Network Routers, Network Switches, General Networking, Command-Line Interface, Network Routing, Networking Hardware, Network Architecture, Network Infrastructure, Cybersecurity, Network Model, Network Protocols
★ 4.6 (113) · Beginner · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: Internet Of Things, Wireless Networks, Network Protocols, Infrastructure Security, Emerging Technologies, Data Science, Embedded Systems, General Networking, Big Data, Amazon Web Services, Cloud Platforms, Computer Hardware
★ 4.7 (528) · Intermediate · Course · 1 - 4 Weeks

The University of Chicago
Skills you'll gain: Software-Defined Networking, Virtual Networking, Virtualization, Network Architecture, General Networking, Network Administration, Network Switches, Network Routing, Network Security, Network Protocols, Hardware Architecture, Application Programming Interface (API), Data-oriented programming
★ 4.5 (292) · Mixed · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Linux, Linux Administration, Operating System Administration, Linux Commands, User Accounts, Command-Line Interface, Systems Administration, Operating Systems, User Provisioning, Service Management, System Configuration, System Monitoring, Graphical Tools, File Management
★ 4.6 (66) · Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: User Provisioning, Google Workspace, User Accounts, Identity and Access Management, Cloud Management, System Configuration, Configuration Management, Security Management, Security Controls
★ 4.6 (47) · Beginner · Course · 1 - 4 Weeks

The Hong Kong University of Science and Technology
Skills you'll gain: Governance Risk Management and Compliance, Regulatory Compliance, Business Continuity Planning, Compliance Management, Financial Regulation, Disaster Recovery, Risk Management Framework, Financial Controls, Operational Risk, Financial Services, Business Continuity, Financial Regulations, Security Management, Risk Management, Business Risk Management, Information Technology, Risk Control, Governance, Regulatory Requirements, Contingency Planning
★ 4.7 (222) · Beginner · Course · 1 - 3 Months

Columbia University
Skills you'll gain: Portfolio Management, Investment Management, Portfolio Risk, Asset Management, Investments, Risk Modeling, Estimation, Market Liquidity, Risk Management, Financial Market, Financial Trading, Model Optimization, Equities, Securities (Finance), Statistical Methods, Risk Analysis, Transaction Processing, Securities Trading, Market Dynamics, Financial Analysis
★ 4.6 (47) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: MITRE ATT&CK Framework, Cybersecurity, Cyber Threat Intelligence, Cyber Operations, IT Automation, Scripting, Python Programming
★ 4.5 (431) · Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Database Administration, Microsoft Azure, Databases, Database Software, Data Store, Relational Databases, MySQL, SQL, Database Management Systems, Database Management, NoSQL, Query Languages, PostgreSQL, Data Security, Data Management, Cloud Deployment
★ 4.6 (271) · Beginner · Course · 1 - 4 Weeks