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.

University of Colorado Boulder
Skills you'll gain: OSI Models, Network Security, TCP/IP, Network Architecture, Network Protocols, General Networking, Network Routers, Routing Protocols, Public Key Infrastructure, Network Model, Cryptography, Web Applications
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cybersecurity, Business Continuity, Threat Detection, Endpoint Security, Disaster Recovery, Cyber Security Policies, Incident Response, Vulnerability Assessments, Network Security, Application Security, Governance Risk Management and Compliance, Cloud Security, Risk Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: OSI Models, Computer Networking, Network Routers, General Networking, TCP/IP, Networking Hardware, Network Troubleshooting, Network Switches, Local Area Networks, Network Infrastructure, Network Protocols, Network Performance Management, Network Model, Network Analysis
Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Virtual Private Networks (VPN), Cybersecurity, Multi-Factor Authentication, Authentications, Information Systems Security, Desktop Support, Network Security, Technical Support and Services, Information Privacy, Servers, Cloud Computing, Encryption, Identity and Access Management, Mac OS
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Product Development, Product Management, Product Lifecycle Management, Product Roadmaps, Market Research, Microsoft 365, Product Requirements, AI Product Strategy, Cross-Functional Collaboration, Project Management Institute (PMI) Methodology, Product Strategy, Compliance Management, Competitive Analysis, Enterprise Security, Agile Methodology, Market Data, Stakeholder Management, Prioritization
Beginner · Course · 1 - 3 Months

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Web Servers, Distributed Computing, Network Troubleshooting, Servers, Network Architecture, System Programming, Network Protocols, Systems Architecture, TCP/IP, Computer Networking, Network Performance Management, Scalability, File Transfer Protocol (FTP), System Design and Implementation, Web Services, Microservices, Debugging, OS Process Management, Software Development, Application Programming Interface (API)
Beginner · Course · 1 - 3 Months

University of London
Skills you'll gain: MongoDB, JavaScript Frameworks, Web Development Tools, Web Applications, Authentications, Web Development, Database Application, User Accounts, Application Security, Package and Software Management, Javascript, Software Installation
Mixed · Course · 1 - 3 Months
EDUCBA
Skills you'll gain: Splunk, Security Information and Event Management (SIEM), Data Modeling, Role-Based Access Control (RBAC), System Monitoring, Dashboard, Incident Response, Threat Detection, User Accounts, Data Transformation, Cybersecurity, Machine Learning, Systems Administration, Performance Tuning, Data Visualization, Event Monitoring, Continuous Monitoring, Data Manipulation, Data Analysis, Statistical Analysis
Beginner · Specialization · 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
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

O.P. Jindal Global University
Skills you'll gain: International Relations, Diplomacy, Political Sciences, Public Policies, World History, Policy Analysis, Case Studies, Economics, Governance, Security Strategy
Beginner · Course · 1 - 3 Months

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Social Media, Social Media Strategy, Social Media Marketing, Social Media Management, Professional Networking, LinkedIn, Ethical Standards And Conduct, Facebook, Trustworthiness, Instagram, Digital Media Strategy, Social Network Analysis, Professional Development, Safety and Security, Personally Identifiable Information, Digital Marketing, Cybersecurity, Content Creation, Digital Communications, Communication
Beginner · Course · 1 - 3 Months

New York University
Skills you'll gain: Authentications, Public Key Infrastructure, Cryptography, Data Encryption Standard, Computer Security, Cybersecurity, Network Security, Security Controls, Encryption, Multi-Factor Authentication
Intermediate · Course · 1 - 4 Weeks