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.

Coursera
Skills you'll gain: Data Integrity, Spreadsheet Software, Microsoft Excel, Excel Formulas, Google Sheets, Collaborative Software, Security Controls, Data Security, Financial Modeling
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, Docker (Software), Containerization, Linux, Devops Tools, Network Troubleshooting, Linux Servers, Linux Commands, Ansible, Kubernetes, Infrastructure as Code (IaC), Operating System Administration, Network Monitoring, Network Administration, System Configuration, Remote Access Systems, Multi-Factor Authentication, Network Protocols, Network Security, Hardening
★ 4.8 (10) · Advanced · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Amazon Web Services, Disaster Recovery, Security Architecture Review, Threat Management, User Provisioning, Incident Management, Intrusion Detection and Prevention, Authentications, User Accounts
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Microsoft Intune (Mobile Device Management Software), Endpoint Security, Cyber Security Policies, Security Controls, Microsoft Windows, Enterprise Security, Mobile Security, Endpoint Detection and Response, Operating System Administration, Security Management, Android (Operating System), Patch Management, Microsoft Azure, System Configuration, System Monitoring, Continuous Monitoring, Remote Access Systems, Configuration Management
★ 4.9 (12) · Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Application Security, OAuth, Data Validation, Authentications, Secure Coding, Identity and Access Management, Web Applications, Authorization (Computing), Cyber Attacks, Distributed Denial-Of-Service (DDoS) Attacks, Data Integrity, Server Side, Security Strategy, Patch Management
★ 4.9 (17) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Contingency Planning, Business Continuity Planning, Computer Security Incident Management, Security Management, Incident Response, Disaster Recovery, Data Centers, Incident Management, Security Controls, Cybersecurity, Infrastructure Security, Configuration Management, Change Control, Digital Forensics, Scenario Testing
Advanced · Course · 1 - 4 Weeks

Whizlabs
Skills you'll gain: Security Management, Security Controls, Threat Management, IT Management, Cyber Security Strategy, Continuous Monitoring, IT Security Architecture, Cyber Security Policies, Cyber Governance, Law, Regulation, and Compliance, Security Awareness, Program Implementation, Risk Management, Computer Security Awareness Training, Risk Control, Governance, Performance Metric, Risk Analysis, Disaster Recovery, Feasibility Studies
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Virtual Local Area Network (VLAN), Network Planning And Design, Network Protocols, Network Architecture, Network Administration, Routing Protocols, System Configuration, Network Routers, Local Area Networks, Network Infrastructure, Network Troubleshooting, Network Switches, General Networking, Computer Networking, Dynamic Host Configuration Protocol (DHCP), Data Centers, Network Routing, Network Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, Linux, Linux Servers, Linux Commands, Scripting, Data Integrity
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Identity and Access Management, IT Security Architecture, Security Testing, Single Sign-On (SSO), Data Security, Contingency Planning, User Provisioning, Cryptography, Network Security, Application Security, Information Systems Security, Cryptographic Protocols, Asset Protection, Cloud Security, Computer Security Incident Management, Digital Assets, Public Key Cryptography Standards (PKCS), Incident Response, Risk Management Framework, Risk Management
★ 4.7 (115) · Advanced · Specialization · 3 - 6 Months

Skills you'll gain: Threat Modeling, Application Security, Secure Coding, Authentications, OAuth, Software Testing, Software Development Life Cycle, Unit Testing, Security Testing, Unified Modeling Language, Application Design, Authorization (Computing), Single Sign-On (SSO), Security Software, Software Development, Data Validation, Cyber Security Assessment, Cyber Security Strategy, Cybersecurity, Role-Based Access Control (RBAC)
Intermediate · Course · 3 - 6 Months

Pearson
Skills you'll gain: File Management, Firewall, Linux Administration, Ubuntu, Hardening, File Systems, OS Process Management, Linux, Authentications, Zero Trust Network Access, Linux Servers, Remote Access Systems, Data Security, Authorization (Computing), User Accounts, Network Security, Linux Commands, User Provisioning, Security Controls, IT Security Architecture
★ 4.5 (6) · Intermediate · Specialization · 1 - 4 Weeks