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.

Microsoft
Skills you'll gain: Network Security, Computer Networking, General Networking, Authentications, Authorization (Computing), Firewall, Security Controls, Network Architecture, OSI Models, Networking Hardware, Network Protocols, Virtualization, Virtual Networking, Cloud Services, TCP/IP, Network Infrastructure, Cloud Computing, Network Model, Technical Support and Services, Network Monitoring
★ 4.8 (345) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Network Security, Cryptography, Firewall, Cybersecurity, Intrusion Detection and Prevention, Virtual Private Networks (VPN), Cloud Security, Cyber Attacks, Public Key Infrastructure, Human Factors (Security), Virtual Local Area Network (VLAN)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Networking Hardware
★ 4.8 (73) · Beginner · Course · 1 - 4 Weeks

Check Point Software Technologies Ltd.
Skills you'll gain: Command-Line Interface, System Configuration, Security Management, Network Security, Network Monitoring
★ 4.7 (10) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Network Troubleshooting, Hardening, Network Protocols, Authentications, Identity and Access Management, Encryption, Hardware Troubleshooting, Virtual Local Area Network (VLAN), Key Management, Wireless Networks
★ 4.8 (6) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Endpoint Detection and Response, Cloud Security, Network Administration, Data Loss Prevention, Cloud Deployment, Cyber Attacks, Infrastructure Security, Computer Security, Cryptographic Protocols, Email Security, Human Factors (Security), Network Infrastructure, Network Protocols, Remote Access Systems, Data Security, Authentications, Malware Protection, Mobile Security, Authorization (Computing)
★ 4.9 (10) · Intermediate · Specialization · 1 - 3 Months

Royal Holloway, University of London
Skills you'll gain: Computer Security Incident Management, Linux, Network Security, Cyber Governance, IT Security Architecture, OSI Models, Incident Management, Incident Response, Security Management, Linux Commands, TCP/IP, Computer Systems, Command-Line Interface, Network Protocols, Computer Networking, Cybersecurity, Human Factors (Security), Cyber Attacks, Culture, Psychology
★ 4.8 (223) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Cybersecurity, Infrastructure Security, Scripting Languages
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Identity and Access Management, Cloud Security, Key Management, Network Security, Multi-Factor Authentication, Network Monitoring, Security Controls, Authentications, Network Protocols
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Mobile Security, System Monitoring, Network Monitoring, Internet Of Things, Wireless Networks, Application Security, Information Systems Security, Authorization (Computing), Cybersecurity, Identity and Access Management, Cyber Attacks, Authentications, Cloud Security, TCP/IP, Cloud Services, Cloud Platforms
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Endpoint Security, Hardening, Virtual Private Networks (VPN), Network Administration, Cloud Deployment, Cloud Security, Cybersecurity, Infrastructure Security, Computer Security, Role-Based Access Control (RBAC), Cryptographic Protocols, Email Security, Network Infrastructure, Network Protocols, Remote Access Systems
Intermediate · Course · 1 - 4 Weeks

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