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.

Cisco Learning and Certifications
Skills you'll gain: MITRE ATT&CK Framework, Threat Modeling, Cyber Threat Intelligence, Threat Detection, Threat Management, Exploit development, Computer Security Incident Management, Network Analysis, Cybersecurity, Network Security, Network Monitoring, SQL
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Cybersecurity, TCP/IP, Cyber Attacks, Endpoint Security, Infrastructure Security, Network Routing, Threat Detection, Firewall, Computer Networking, Wireless Networks, Cloud Computing, Information Technology Infrastructure Library, Vulnerability Assessments
Intermediate · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Linux, Linux Commands, Computer Systems, Command-Line Interface, Cybersecurity, Computer Architecture, Network Security, Vulnerability Assessments, Hardware Architecture, Application Security, Threat Detection, Authorization (Computing), Network Protocols, Virtual Private Networks (VPN), Operating Systems, Authentications, Network Monitoring, TCP/IP, Network Analysis
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Identity and Access Management, Network Monitoring, Google Cloud Platform, Virtual Private Networks (VPN), General Networking, Network Troubleshooting, Virtual Local Area Network (VLAN), Network Security, Network Architecture, Network Routing, Cloud Computing, Cloud Security, Firewall, Key Management, Load Balancing, Cloud Storage, DevOps, Encryption, Automation
Intermediate · Course · 1 - 4 Weeks

University of Maryland, College Park
Skills you'll gain: Usability, Human Computer Interaction, Authentications, Security Engineering, Usability Testing, Interaction Design, Threat Modeling, Human Factors, Information Privacy, Cybersecurity, Personally Identifiable Information, User Interface (UI) Design, User Acceptance Testing (UAT), Multi-Factor Authentication, User Centered Design, Design
Mixed · Course · 1 - 3 Months

Skills you'll gain: Linux Administration, Docker (Software), Containerization, Linux, Network Troubleshooting, Linux Servers, Ansible, Kubernetes, Authentications, Infrastructure as Code (IaC), Network Administration, System Configuration, Remote Access Systems, Multi-Factor Authentication, Network Protocols, Network Security, Security Controls, Firewall, Web Servers, Encryption
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Penetration Testing, Cyber Security Assessment, Exploitation techniques, Vulnerability Assessments, Intrusion Detection and Prevention, Application Security, Network Security, Distributed Denial-Of-Service (DDoS) Attacks, Virtual Local Area Network (VLAN), Cloud Security, Wireless Networks, Application Programming Interface (API)
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: General Networking, Network Architecture, TCP/IP, Cybersecurity, Networking Hardware, Computer Networking, Network Security, Threat Detection, Network Routers, Cyber Attacks, Network Switches, Firewall, Security Strategy
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Virtual Private Networks (VPN), Network Security, Microsoft Azure, Network Administration, Network Routing, Cloud Security, Firewall, Wide Area Networks, Network Architecture, Application Security, Network Monitoring, Encryption, Load Balancing
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Dynamic Host Configuration Protocol (DHCP), Network Security, Virtual Local Area Network (VLAN), Network Architecture, Network Routers, Local Area Networks, General Networking, Authentications, Network Switches
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: IT Security Architecture, Network Security, Infrastructure Security, Software-Defined Networking, Application Security, Zero Trust Network Access, Network Architecture, Threat Modeling, Cybersecurity, Enterprise Architecture, Security Controls, Secure Coding, Cloud Security, Scenario Testing, Cryptography, Vulnerability Assessments
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Open Web Application Security Project (OWASP), Mobile Security, Network Security, Cybersecurity, Cryptography, Exploit development, Penetration Testing, Intrusion Detection and Prevention, Vulnerability Assessments, Wireless Networks, Encryption, Secure Coding, Application Security, Threat Modeling, Web Applications, Cloud Security, Internet Of Things
Intermediate · Course · 1 - 3 Months