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.

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, Threat Modeling, Command-Line Interface, Network Protocols, Cybersecurity, Computer Networking, Human Factors (Security), Cyber Threat Intelligence, Cyber Attacks
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Intrusion Detection and Prevention, Continuous Monitoring
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, OSI Models, Distributed Denial-Of-Service (DDoS) Attacks, Firewall, TCP/IP, Network Administration, Wireless Networks, Network Protocols, General Networking, Intrusion Detection and Prevention, Local Area Networks, Network Routers, Security Controls, Mobile Security, Authentications, Authorization (Computing)
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Penetration Testing, Cybersecurity, Metasploit, Cyber Attacks, Application Security, Exploitation techniques, Network Security, Security Awareness, Malware Protection, Vulnerability Assessments, Javascript
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Open Shortest Path First (OSPF), Virtual Local Area Network (VLAN), Wide Area Networks, Network Security, Threat Detection, Network Administration, TCP/IP, Multiprotocol Label Switching, Computer Networking, Network Routing, Virtual Private Networks (VPN), Network Troubleshooting, Dynamic Host Configuration Protocol (DHCP), Network Switches, Network Protocols
Advanced · Course · 3 - 6 Months

EC-Council
Skills you'll gain: Network Security, Cybersecurity, Information Assurance, Cloud Security, Security Controls, Mobile Security, Data Security, Cryptography, Public Key Infrastructure, Authorization (Computing), Intrusion Detection and Prevention, Network Monitoring, Wireless Networks, Authentications, Identity and Access Management, Encryption, Threat Detection, Internet Of Things
Beginner · Course · 1 - 3 Months

New York University
Skills you'll gain: Infrastructure Security, Cyber Security Strategy, Mobile Security, Enterprise Security, Cyber Risk, Cyber Security Policies, Cybersecurity, Cloud Security, NIST 800-53, Hybrid Cloud Computing, Security Controls, Risk Management Framework, Blockchain, Internet Of Things, Cryptography, Data Integrity
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Communication Systems
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Event Monitoring, OSI Models, Network Monitoring, Network Protocols, Cyber Threat Intelligence, Network Analysis, Network Troubleshooting, TCP/IP, Distributed Denial-Of-Service (DDoS) Attacks, Threat Detection, General Networking, Network Security, Incident Response, Command-Line Interface
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Software-Defined Networking, Network Architecture, Network Planning And Design, Wide Area Networks, Virtual Private Networks (VPN), Network Administration, Network Security, Network Performance Management, Firewall, Cloud Deployment, Network Routing, Encryption
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Penetration Testing, Cyber Security Assessment, Exploitation techniques, Vulnerability Assessments, Intrusion Detection and Prevention, Brute-force attacks, Application Security, Network Security, Virtual Local Area Network (VLAN), Cloud Security, API Testing, Wireless Networks
Advanced · Course · 1 - 4 Weeks