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.

Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Network Security, Network Monitoring, Firewall, Google Cloud Platform, Cloud Security, Intrusion Detection and Prevention, Identity and Access Management, Proxy Servers, Network Administration, Threat Detection, Virtual Networking, Cyber Security Policies
★ 4.6 (9) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: SonarQube, Continuous Integration, Code Coverage, Vulnerability, Code Review, Security Testing, CI/CD, Secure Coding, Application Security, Vulnerability Scanning, Continuous Delivery, DevSecOps, Software Quality Assurance, Maintainability, Vulnerability Management, Software Technical Review, Security Management, Data Integration, Quality Improvement, Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Threat Modeling, Network Security, Vulnerability Management, Intrusion Detection and Prevention, Hardening, Computer Security Incident Management, Cyber Threat Intelligence, Threat Management, Security Awareness, Incident Response, Cybersecurity, Network Protocols, Endpoint Detection and Response, Threat Detection, Bash (Scripting Language), Debugging, Linux, Web Presence, Python Programming, SQL
★ 4.8 (69K) · Beginner · Professional Certificate · 3 - 6 Months

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

Skills you'll gain: Data Security, Data Governance, Data Architecture, Data Quality, Incident Response, Security Controls, Information Privacy, Data Management, Security Strategy, Threat Management, Threat Detection, Law, Regulation, and Compliance, Data Infrastructure, Risk Management, Cybersecurity, Compliance Management, Encryption, Incident Management, Data Integrity, Risk Analysis
★ 4.3 (44) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Internet Of Things, Control Systems, Cybersecurity, Firewall, Cyber Security Strategy, Interoperability, Network Security, Dataflow, IT Security Architecture, Process Control, Network Protocols, Enterprise Resource Planning, Systems Integration, Automation, Data Flow Diagrams (DFDs), Cloud-Based Integration, Software Systems, Security Management, Data Integration
Beginner · Course · 1 - 3 Months

Skills you'll gain: Threat Modeling, Cloud Management, Cloud Security, Cyber Threat Intelligence, Open Web Application Security Project (OWASP), Data Governance, Security Information and Event Management (SIEM), Cloud Computing Architecture, Incident Response, Identity and Access Management, Cloud Infrastructure, DevSecOps, Event Monitoring, Incident Management, AWS Identity and Access Management (IAM), MITRE ATT&CK Framework, Business Continuity Planning, Network Monitoring, Zero Trust Network Access, Disaster Recovery
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Penetration Testing
Beginner · Course · 1 - 3 Months

John Wiley & Sons
Skills you'll gain: Cyber Threat Intelligence, Threat Management, Threat Detection, Cybersecurity, Security Testing, IT Security Architecture, Cyber Security Assessment, Cyber Security Strategy, Security Strategy, Security Management, Cyber Risk, Risk Management Framework, Risk Management, Information Systems Security, Vulnerability Scanning, Vulnerability Assessments, Security Controls, Penetration Testing, Incident Response, Vendor Management
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: ISO/IEC 27001, Risk Management, Risk Management Framework, Personally Identifiable Information, Security Controls, System Implementation, Security Awareness, Information Privacy, Risk Mitigation, Security Management, Security Strategy
★ 4.7 (57) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Wireless Networks, Network Performance Management, Network Monitoring, Dynamic Host Configuration Protocol (DHCP), Ansible, Network Administration, Software-Defined Networking, Network Planning And Design, Local Area Networks, Network Protocols, System Configuration, Infrastructure as Code (IaC), Remote Access Systems, Terraform, Configuration Management, Authentications
★ 5 (6) · Advanced · Course · 3 - 6 Months