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: Systems Administration, IT Security Architecture, Operating System Administration, Information Systems Security, Remote Access Systems, IT Infrastructure, Hardening, Network Troubleshooting, OSI Models, Computer Networking, Routing Protocols, Application Security, TCP/IP, Cloud Management, Technical Support, Microsoft Windows, File Systems, Package and Software Management, Computer Hardware, Software Installation
★ 4.9 (7.3K) · Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: Responsible AI, Data Ethics, AI Security, General Data Protection Regulation (GDPR), Information Privacy, Law, Regulation, and Compliance, Governance, Data Governance, Model Deployment, Compliance Management, Artificial Intelligence and Machine Learning (AI/ML), Personally Identifiable Information, AI literacy, Legal Risk, Risking, Decision Intelligence, Governance Risk Management and Compliance, Regulation and Legal Compliance, Machine Learning, Risk Management
Intermediate · Course · 1 - 3 Months

Total Seminars
Skills you'll gain: Routing Protocols, Network Monitoring, TCP/IP, Network Troubleshooting, OSI Models, Network Infrastructure, Open Shortest Path First (OSPF), Virtual Local Area Network (VLAN), Wide Area Networks, Local Area Networks, Network Architecture, Network Switches, Network Routers, Network Protocols, Network Performance Management, Network Administration, Network Security, Virtual Private Networks (VPN), Networking Hardware, Network Analysis
Beginner · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: Cloud Deployment, Agentic Workflows, Model Deployment, Application Deployment, Generative AI Agents, Agentic systems, AI Workflows, Token Optimization, LLM Application, Cloud Hosting, Virtual Machines, System Configuration, Automation, Servers, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), AI Security, Context Engineering, Generative AI, Prompt Engineering
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: MySQL, Database Administration, Relational Databases, Database Management, Database Development, Database Systems, Database Management Systems, SQL, Database Design, Docker (Software), Linux Administration, Containerization, Role-Based Access Control (RBAC), Application Deployment, Identity and Access Management, Data Integrity, Data Storage
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Machine Learning Algorithms, Real-Time Operating Systems, Big Data, Internet Of Things, Machine Learning Methods, Data Preprocessing, Analytics, Embedded Software, Embedded Systems, File Systems, Data Analysis, Debugging, Machine Learning, Model Based Systems Engineering, Security Engineering, Information Systems Security, Wireless Networks, Infrastructure Security, Failure Analysis, Simulation and Simulation Software
★ 4.6 (861) · Intermediate · Specialization · 3 - 6 Months

Amazon Web Services
Skills you'll gain: Amazon Web Services, Web Applications, Cloud Services, Amazon Elastic Compute Cloud, Cloud Solutions, Information Technology, Cloud Computing, Public Cloud, Network Protocols, IT Infrastructure, Computer Systems, Amazon S3, Web Development, General Networking, Network Security, Web Servers, Operating Systems, Servers, Data Analysis, Project Management
★ 4.8 (528) · Beginner · Course · 1 - 4 Weeks

Kennesaw State University
Skills you'll gain: Cyber Governance, Risk Management Framework, Risk Analysis, Risk Management, Threat Management, Threat Modeling, Business Risk Management, Enterprise Risk Management (ERM), Cyber Risk, Security Management, Governance, Cybersecurity, Cyber Security Strategy, Analysis, Security Strategy, Asset Management, Cyber Security Assessment, Information Technology
★ 4 (10) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Information Systems, Management Information Systems, Business Systems, Information Technology, Information Systems Security, Business Technologies, Information Management, Decision Support Systems, Open Source Technology, Business Systems Analysis, Technology Strategies, Systems Analysis, Emerging Technologies, Software Systems, Computing Platforms, Mobile Security, Web Applications, Operational Efficiency, Computer Hardware, Strategic Decision-Making
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Digital Forensics, Incident Response, Computer Security Incident Management, Threat Detection, Incident Management, Cybersecurity, Security Management, Threat Management, Data Integrity
★ 4.7 (1.9K) · Intermediate · Course · 1 - 4 Weeks

Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Databricks, Dashboard, Star Schema, Dashboard Creation, Snowflake Schema, Data Lakes, SQL, Interactive Data Visualization, Database Administration, Business Intelligence, Data Modeling, Data Architecture, Data Warehousing, Data Import/Export, Query Languages, Data Analysis, Data Governance, Data Access, Extract, Transform, Load, Data Security
Intermediate · Course · 1 - 3 Months