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: Ubuntu, Package and Software Management, Bash (Scripting Language), Linux Servers, Linux Administration, Unix, Linux, Shell Script, Unix Shell, Server Administration, Operating System Administration, Linux Commands, Systems Administration, User Accounts, Servers, System Monitoring, User Provisioning, Command-Line Interface, Software Installation, Computer Security
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Ansible, Puppet (Configuration Management Tool), Software-Defined Networking, Network Administration, Security Awareness, IT Automation, Chef (Configuration Management Tool), Virtual Private Networks (VPN), JSON, Authentications, Network Engineering, Computer Security Awareness Training, Network Infrastructure, Authorization (Computing), Identity and Access Management, Configuration Management, Cyber Security Policies, Remote Access Systems, Application Programming Interface (API)
★ 4.8 (11) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Event Monitoring, General Networking, IT Security Architecture, Network Architecture, Systems Integration, Incident Response, Data Integration, TCP/IP, OSI Models, Threat Management, Cybersecurity, Security Management, Networking Hardware, Cyber Security Policies, Data Governance, Data Management, Command-Line Interface, Application Deployment, Security Strategy, System Monitoring
Beginner · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Blockchain, Cryptography, Network Security, Secure Coding, Cryptographic Protocols, Distributed Denial-Of-Service (DDoS) Attacks, Encryption, Cybersecurity, Key Management, Vulnerability Assessments, Authorization (Computing), Code Review, Dependency Analysis
Advanced · Course · 1 - 3 Months

Infosec
Skills you'll gain: Prompt Engineering, ChatGPT, Security Testing, Exploit development, Responsible AI, API Testing, AI Integrations, Data Ethics, Penetration Testing, OpenAI, Exploitation techniques, Vulnerability Scanning, Generative AI
★ 4.2 (15) · Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Internet Of Things, Information Systems Security, Wireless Networks, General Networking, Network Security, Cybersecurity, IBM Cloud, Computing Platforms, Cloud Platforms, Cryptography, Telecommunications, Network Protocols, Market Opportunities, Automation, Emerging Technologies, Embedded Systems, Software-Defined Networking, Market Analysis, Market Share
★ 4.7 (625) · Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Google Gemini, AI Security, Cloud Deployment, Google Cloud Platform, Cloud Security, Generative AI, Vulnerability Assessments, Security Controls, Vulnerability Management, Security Engineering, Threat Detection
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Dynamic Host Configuration Protocol (DHCP), Linux Servers, User Accounts, Virtual Networking, Virtualization, Linux Administration, Lightweight Directory Access Protocols, Network Performance Management, Virtualization and Virtual Machines, Group Policy, Server Administration, Performance Tuning, Virtual Machines, Systems Administration, Network Administration, Network Security, Security Management, Cybersecurity, Disaster Recovery, Large Language Modeling
Intermediate · Specialization · 1 - 4 Weeks

Amazon Web Services
Skills you'll gain: Cloud Security, Amazon Web Services, Encryption, AWS Identity and Access Management (IAM), Amazon S3, Data Security, Cryptography, Personally Identifiable Information
★ 4.9 (46) · Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Computer Security, OSI Models, IT Management, Systems Administration, Virtualization, Virtualization and Virtual Machines, Operating System Administration, Network Security, Information Systems Security, Enterprise Security, General Networking, Cybersecurity, Network Administration, Security Management, Computing Platforms, Network Infrastructure, Security Controls, Virtual Machines, Enterprise Architecture, Information Assurance
★ 4.7 (640) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Risk Management Framework, Risk Analysis, Risk Management, Cybersecurity, Incident Management, Network Security, Incident Response, Cloud Security, Cyber Attacks, Authentications, Business Continuity Planning, Information Systems Security, Application Security, Security Management, Threat Modeling, Threat Management, OSI Models, Disaster Recovery, Cryptography, Vulnerability Assessments
Intermediate · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Blockchain, Key Management, Public Key Infrastructure, Cryptography, Application Security, Encryption, Secure Coding, Public Key Cryptography Standards (PKCS), Security Testing, Vulnerability Management, Solution Design, Cyber Governance, Vulnerability Assessments, Code Review, Authorization (Computing), Data Integrity
★ 4.5 (10) · Intermediate · Course · 1 - 3 Months