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 Colorado System
Skills you'll gain: Public Key Infrastructure, Cybersecurity, Information Systems Security, Data Security, Cyber Attacks, Information Assurance, Network Security, Risk Management Framework, Security Controls, Cryptography, Cryptographic Protocols, Key Management, Security Engineering, Threat Modeling, Security Management, Authorization (Computing), Encryption, Email Security, Data Integrity, Authentications
★ 3.9 (242) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Disaster Recovery, General Networking, Network Administration, Authentications, Vulnerability Assessments, Network Infrastructure, Computer Security, Wireless Networks, Cybersecurity, Network Monitoring, Local Area Networks, Network Performance Management, Telecommunications, Network Protocols, Security Controls, Event Monitoring, Network Routing, Cryptography, Encryption
Intermediate · Course · 1 - 4 Weeks

Minnesota State University, Mankato
Skills you'll gain: Payment Processing, Payment Card Industry (PCI) Data Security Standards, Payment Systems, Credit/Debit Card Processing, Merchant Services, Cybersecurity, Disaster Recovery, Network Security, Cyber Risk, Security Awareness, Cyber Security Strategy, Information Systems Security, User Accounts, Infrastructure Security, Network Routers, Wireless Networks, System Configuration, Endpoint Security, Computer Security, Computer Security Incident Management
Beginner · Course · 1 - 4 Weeks

Total Seminars
Skills you'll gain: Vulnerability Scanning, Metasploit, Penetration Testing, Vulnerability Assessments, Cyber Security Assessment, Network Security, Vulnerability Management, Brute-force attacks, Exploitation techniques, Network Monitoring, Network Troubleshooting, Security Engineering, Network Analysis, Wireless Networks, Network Protocols, Data Manipulation
Advanced · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Blockchain, Cryptography, Network Security, Secure Coding, Cryptographic Protocols, Distributed Denial-Of-Service (DDoS) Attacks, Encryption, Cybersecurity, Key Management, Vulnerability Assessments, Authorization (Computing), Code Review, Dependency Analysis
Advanced · Course · 1 - 3 Months

Skills you'll gain: IT Security Architecture, Network Security, Infrastructure Security, Enterprise Application Management, Software-Defined Networking, Application Security, Zero Trust Network Access, Security Engineering, Network Architecture, Cyber Security Strategy, Cybersecurity, Enterprise Architecture, Software Quality Assurance, Computer Security, Security Controls, Secure Coding, Network Planning And Design, Cloud Security, Scenario Testing, Cryptography
★ 4.5 (6) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Virtual Private Networks (VPN), Linux Servers, Ubuntu, Network Troubleshooting, Authentications, Linux Administration, Remote Access Systems, Cryptographic Protocols, Virtual Networking, Encryption, Network Security, Linux, Network Monitoring, Network Performance Management, Linux Commands, Interoperability, Key Management
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Network Planning And Design, Microsoft Azure, Network Troubleshooting, Network Security, Network Architecture, Network Monitoring, Load Balancing, Virtual Networking, Network Engineering, Network Performance Management, Network Support, Network Administration, Network Infrastructure, Cloud Engineering, IT Security Architecture, Scalability, Firewall, Virtual Private Networks (VPN), Security Engineering, Performance Tuning
★ 4.7 (131) · Beginner · Specialization · 3 - 6 Months

Whizlabs
Skills you'll gain: Infrastructure Security, Vulnerability Scanning, Network Security, Amazon Web Services, Firewall, Vulnerability Assessments, Network Infrastructure, Virtual Networking, Security Controls, Cloud Security, Vulnerability Management, Endpoint Security, Network Planning And Design, Distributed Denial-Of-Service (DDoS) Attacks, Load Balancing
★ 4 (7) · Intermediate · Course · 1 - 4 Weeks

Akamai Technologies, Inc.
Skills you'll gain: Endpoint Security, Incident Response, Network Security, Vulnerability Scanning, Computer Security Incident Management, Security Management, Incident Management, Penetration Testing, Cybersecurity, Authentications, Cyber Attacks, Security Controls, Vulnerability Assessments, Encryption, Firewall, Threat Management, User Accounts, Identity and Access Management, Mobile Security, Risk Management
★ 4.9 (31) · Beginner · Course · 1 - 3 Months

Total Seminars
Skills you'll gain: Hardening, Endpoint Security, Endpoint Detection and Response, Intrusion Detection and Prevention, Network Security, Security Controls, Wireless Networks, IT Security Architecture, Authentications, Security Testing, Brute-force attacks, Cryptographic Protocols, Security Management, Vulnerability Management, Security Awareness, Security Strategy, System Configuration, Cryptography, Encryption
Intermediate · Course · 1 - 3 Months

Macquarie University
Skills you'll gain: Cryptography, Encryption, Network Security, Cybersecurity, Security Engineering, Network Protocols, Federated Learning, Security Management
★ 4.8 (13) · Beginner · Course · 1 - 3 Months