Network security courses can help you learn about firewalls, intrusion detection systems, and encryption protocols. You can build skills in risk assessment, incident response, and vulnerability management. Many courses introduce tools like Wireshark for network analysis, Nessus for vulnerability scanning, and various security information and event management (SIEM) systems, showing how these skills are applied in practical work to protect networks from cyber threats.

LearnQuest
Skills you'll gain: Blockchain, Key Management, Cryptography, Application Security, Encryption, Secure Coding, Data Security, Public Key Cryptography Standards (PKCS), Security Testing, Vulnerability Management, Vulnerability Assessments, Code Review
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: NSX-T Network Virtualization, Software-Defined Networking, Virtual Networking, Virtual Local Area Network (VLAN), Network Switches, Network Architecture, Network Routing, Network Security, Security Controls, Network Performance Management, Firewall, Network Protocols, Scalability
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Linux Administration, Linux, Linux Servers, Operating System Administration, User Accounts, Linux Commands, User Provisioning, Systems Administration, System Configuration, Hardening, Security Controls, Authorization (Computing), Computer Security, Network Administration, Authentications
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cryptographic Protocols, Blockchain, Business Continuity, Cryptography, Disaster Recovery, Vulnerability Assessments, Enterprise Security, Regulation and Legal Compliance, Data Security, Application Frameworks, Cybersecurity, Emerging Technologies, Distributed Computing, Transaction Processing
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Salesforce, Authentications, Role-Based Access Control (RBAC), Identity and Access Management, Security Controls, Data Security, Authorization (Computing), Event Monitoring, Application Security, Security Strategy, Data Sharing, Responsive Web Design, Mobile Development, User Interface (UI)
Intermediate · Course · 1 - 4 Weeks

The Hong Kong University of Science and Technology
Skills you'll gain: Financial Regulation, Financial Regulations, Bank Regulations, FinTech, Financial Services, Financial Industry Regulatory Authorities, Mobile Banking, Regulatory Requirements, Fraud detection, Data Security, Cybersecurity, Insurance, Blockchain, Digital Forensics
Beginner · Course · 1 - 3 Months

Skills you'll gain: Linux Administration, Linux, User Accounts, Identity and Access Management, Authentications, Virtual Machines, Virtualization, Operating System Administration, Security Controls, System Configuration, Command-Line Interface
Beginner · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Beginner · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Threat Modeling, Cyber Threat Intelligence, Incident Response, MITRE ATT&CK Framework, Cloud Security, Cyber Threat Hunting, Risk Management, Cost Management, Cyber Security Strategy, Governance, Security Controls, Vulnerability Assessments, Compliance Management, Role-Based Access Control (RBAC), Automation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Threat Modeling, Incident Response, IT Security Architecture, Secure Coding, Application Security, Identity and Access Management, Information Systems Security Assessment Framework (ISSAF), Security Testing, Continuous Monitoring, Information Systems Security, Network Security, Security Strategy, Zero Trust Network Access, Security Awareness, Security Information and Event Management (SIEM), Risk Management Framework, Disaster Recovery, Security Controls, Cybersecurity, Enterprise Architecture
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Network Security, Network Troubleshooting, Network Administration, Hybrid Cloud Computing, Cloud Computing Architecture, Firewall, Google Cloud Platform, Network Monitoring, Network Architecture, Network Routing, Load Balancing, Network Performance Management, Virtual Private Networks (VPN), Kubernetes, Cloud Security
Advanced · Course · 1 - 3 Months

Skills you'll gain: Operating System Administration, File Systems, Operating Systems, Authentications, Information Technology Infrastructure Library, Microsoft Windows, Linux, Linux Administration, Authorization (Computing), Desktop Support, Identity and Access Management, IT Service Management, Systems Administration, Virtualization, Virtualization and Virtual Machines, Mac OS, IT Management, Cloud Computing, Information Systems Security, User Accounts
Beginner · Course · 1 - 3 Months