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: Security Controls, Vulnerability Scanning, ISO/IEC 27001, Penetration Testing, Vulnerability Assessments, Security Information and Event Management (SIEM), Data Security, Compliance Auditing, Security Assertion Markup Language (SAML), Computer Security Incident Management, Multi-Factor Authentication, Authentications, Computer Security Awareness Training, Single Sign-On (SSO), Event Monitoring, Authorization (Computing), Encryption, Cryptographic Protocols, Advanced Encryption Standard (AES), End User Training and Support
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Windows Servers, Computer Security, Linux Administration, Disaster Recovery, Authorization (Computing), Linux, Linux Servers, Microsoft Windows, Authentications, Operating System Administration, OSI Models, User Accounts, Group Policy, Security Management, User Provisioning, Ubuntu, IT Management, System Monitoring, Systems Administration, Cybersecurity
★ 4.6 (2K) · Beginner · Specialization · 3 - 6 Months

AI CERTs
Skills you'll gain: System Monitoring, Continuous Monitoring, Infrastructure Security, Cryptographic Protocols, Security Controls
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Windows Servers, Active Directory, Remote Access Systems, Microsoft Servers, Virtual Private Networks (VPN), Network Security, Microsoft Azure, Dynamic Host Configuration Protocol (DHCP), Hybrid Cloud Computing, Data Storage Technologies, Azure Active Directory, Data Storage, Network Infrastructure, Virtual Networking, Cloud Storage, Wide Area Networks, File Management, Network Support, File Systems, Network Troubleshooting
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: LinkedIn, Content Creation, Social Media Content, Driving engagement, Professional Networking, Digital Publishing, Social Media, Relationship Building, Branding, Web Presence, Social Media Strategy, Brand Awareness
★ 4.5 (385) · Intermediate · Guided Project · Less Than 2 Hours

Royal Holloway, University of London
Skills you'll gain: Cyber Governance, Incident Management, Incident Response, Security Management, Human Factors (Security), Security Awareness, Cybersecurity, Computer Security Awareness Training, Cyber Risk
★ 4.8 (40) · Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Secure Coding, Application Security, Exploitation techniques, Web Applications, Javascript, Web Development, Node.JS, Java Programming
★ 4.6 (37) · Intermediate · Course · 1 - 4 Weeks

Amazon Web Services
Skills you'll gain: Cloud Security, Encryption, Amazon Web Services, Data Security, Cryptography, Security Controls, Cryptographic Protocols
★ 4.8 (56) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Public Key Infrastructure, IT Security Architecture, Cloud Security, Hardening, Security Engineering, Cryptographic Protocols, Infrastructure Security, Information Systems Security, System Configuration, Cryptography, Endpoint Security, Key Management, Encryption, Mobile Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Microsoft Azure, Identity and Access Management, Network Security, Cloud Security, IT Security Architecture, Security Management, Data Storage, Security Information and Event Management (SIEM), Firewall, Role-Based Access Control (RBAC), Security Controls, Continuous Monitoring, Key Management, Computer Security Incident Management, Incident Response, Event Monitoring, Threat Detection
★ 4.6 (8) · Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Identity and Access Management, Cloud Security, Google Cloud Platform, Security Controls, Cloud Management, User Provisioning, Virtual Networking, Firewall, Network Security, Data Access, Role-Based Access Control (RBAC), Authorization (Computing), Single Sign-On (SSO), Authentications, Load Balancing
★ 4.7 (1.1K) · Intermediate · Course · 1 - 3 Months

Edureka
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Security Testing, Application Security, Vulnerability Scanning, Risk Mitigation, Cyber Security Assessment, Vulnerability Management, Cyber Attacks, Security Engineering, Risk Analysis, Web Applications, Security Awareness, Computer Security, Security Management, Cyber Security Strategy, Authentications, Software Development, Linux, Linux Commands
Beginner · Course · 1 - 4 Weeks