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.

Johns Hopkins University
Skills you'll gain: Email Security, Mobile Security, Network Security, Open Web Application Security Project (OWASP), Network Monitoring, Intrusion Detection and Prevention, Threat Detection, TCP/IP, Network Analysis, Network Protocols, Cybersecurity, Application Security, Wireless Networks, Splunk, Information Privacy
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Cryptography, Public Key Infrastructure, Cybersecurity, Information Systems Security, Data Security, Firewall, Cyber Attacks, Data Encryption Standard, Penetration Testing, Network Security, Information Assurance, Encryption, Exploit development, Advanced Encryption Standard (AES), Cryptographic Protocols, Intrusion Detection and Prevention, Metasploit, Application Security, Security Testing, Cyber Security Policies
★ 4 (604) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Network Security, Virtual Private Networks (VPN), Authentications, Firewall, Authorization (Computing), Computer Security, Remote Access Systems, Cybersecurity, General Networking, Identity and Access Management, Network Monitoring, Security Controls, IT Automation, Software-Defined Networking, Wireless Networks, Dynamic Host Configuration Protocol (DHCP), Virtual Local Area Network (VLAN), Network Routers, Network Routing, Encryption
Intermediate · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Network Security, Role-Based Access Control (RBAC), Cybersecurity, Firewall, Network Monitoring, Authentications, Virtual Private Networks (VPN), Computer Networking, Authorization (Computing), Intrusion Detection and Prevention, Identity and Access Management, Security Controls, Encryption, Remote Access Systems, Group Policy
★ 4.6 (8) · Beginner · Course · 1 - 3 Months

Check Point Software Technologies Ltd.
Skills you'll gain: Virtual Private Networks (VPN), Threat Management, Network Security, Firewall, Threat Detection, Intrusion Detection and Prevention, Disaster Recovery, Remote Access Systems, Network Administration, Data Integrity, Network Monitoring, Cyber Security Policies, Security Controls, System Configuration, Network Troubleshooting, Security Management, System Monitoring, Active Directory
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Threat Intelligence, MITRE ATT&CK Framework, Hardening, Cyber Threat Hunting, Operating System Administration, Exploitation techniques, Linux Commands, Intrusion Detection and Prevention, Cyber Operations, Linux, Cybersecurity, Cyber Security Strategy, Threat Detection, Network Security, Network Monitoring, Operating Systems, Cyber Attacks, Cyber Engineering, Network Administration, Security Awareness
Beginner · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Network Security, IT Security Architecture, OSI Models, TCP/IP, Threat Modeling, Network Protocols, Computer Networking, Cybersecurity, Application Security, Network Architecture, General Networking, Cryptographic Protocols, Vulnerability Assessments, Network Infrastructure, Exploit development, Network Model, Network Routing, Communication Systems
★ 4.9 (33) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Network Monitoring, Network Security, Incident Response, Anomaly Detection, Network Analysis, Digital Forensics, Cyber Security Assessment, Network Protocols, Threat Detection, Technical Communication, Distributed Denial-Of-Service (DDoS) Attacks, Computer Security, Cybersecurity
★ 4.7 (20) · Intermediate · Course · 1 - 3 Months

Whizlabs
Skills you'll gain: Network Security, Virtual Private Networks (VPN), Microsoft Azure, Firewall, Network Engineering, Network Administration, Virtual Networking, Application Security, Remote Access Systems, Cloud Security, Identity and Access Management, Infrastructure Security, Web Applications, Load Balancing
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: OSI Models, Network Security, Security Controls, General Networking, Wireless Networks, Network Protocols, Firewall, Network Administration, TCP/IP, Telecommunications, Proxy Servers, Distributed Denial-Of-Service (DDoS) Attacks, Network Infrastructure, System Configuration, Network Architecture, Intrusion Detection and Prevention, Hardening, Remote Access Systems, Authentications
★ 4.6 (42) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Vulnerability Scanning, Vulnerability Assessments, Penetration Testing, Security Testing, Network Security, Threat Detection, Network Monitoring, Network Analysis, Operating Systems
★ 4.5 (83) · Beginner · Guided Project · Less Than 2 Hours