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.

Skills you'll gain: Endpoint Security, Endpoint Detection and Response, Multi-Factor Authentication, Data Loss Prevention, Network Security, Patch Management, System Configuration, Network Monitoring, Data Security, Authentications, Malware Protection, Mobile Security, Authorization (Computing), Identity and Access Management, Enterprise Application Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Vulnerability Assessments, Distributed Denial-Of-Service (DDoS) Attacks, Vulnerability Scanning, Vulnerability Management, Cybersecurity, Malware Protection, Penetration Testing, Cyber Threat Intelligence, Exploitation techniques, Threat Management, Brute-force attacks, Network Security, Information Systems Security, Security Awareness, Human Factors (Security), Authentications, Network Protocols
Intermediate · Course · 1 - 3 Months

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
Intermediate · Course · 1 - 4 Weeks

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

Infosec
Skills you'll gain: OSI Models, Network Troubleshooting, Network Administration, General Networking, Network Infrastructure, Network Monitoring, Network Security, TCP/IP, Virtual Networking, Local Area Networks, Routing Protocols, Network Routing, Virtual Local Area Network (VLAN), Wireless Networks, Networking Hardware, Disaster Recovery, Network Protocols, Network Switches, Cloud Services
Mixed · Course · 1 - 3 Months

The University of Chicago
Skills you'll gain: Software-Defined Networking, Virtual Networking, Software-Defined Data Center (SDDC), Computer Networking, Virtualization, Network Architecture, Network Administration, Network Switches, Network Routing, Network Security, Network Protocols, Hardware Architecture, Application Programming Interface (API), Verification And Validation
Mixed · Course · 1 - 3 Months

Ball State University
Skills you'll gain: Cryptography, Application Security, Encryption, Authentications, Cybersecurity, Cryptographic Protocols, Data Encryption Standard, Advanced Encryption Standard (AES), Email Security, Network Security, Information Systems Security, Secure Coding, Key Management, Application Development, Public Key Cryptography Standards (PKCS), Public Key Infrastructure, Multi-Factor Authentication, Network Protocols, Data Integrity
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Network Troubleshooting, Incident Response, Technical Support and Services, Cybersecurity, Incident Management, Cyber Attacks, Security Management, Cyber Security Policies, Cyber Security Strategy, Networking Hardware, Threat Detection, Technical Support, Network Security, General Networking, Computer Networking, Network Architecture, Network Administration, Cyber Risk
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Network Security, Intrusion Detection and Prevention, Cybersecurity, Threat Detection, Penetration Testing, Vulnerability Assessments, Firewall, Exploitation techniques, Human Factors (Security), Network Analysis
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: TCP/IP, Local Area Networks, Routing Protocols, Network Routing, Digital Communications, OSI Models, Network Protocols, Open Shortest Path First (OSPF), Network Routers, Dynamic Host Configuration Protocol (DHCP), Network Planning And Design, Network Security, Network Switches, General Networking, Virtual Networking, Network Performance Management, Computer Networking, Network Architecture, Network Engineering, Wireless Networks
Intermediate · Specialization · 3 - 6 Months

Microsoft
Skills you'll gain: Vulnerability Management, Penetration Testing, Vulnerability Scanning, Vulnerability Assessments, Intrusion Detection and Prevention, Security Testing, Network Security, Threat Management, Cyber Security Assessment, System Testing, Firewall, Cybersecurity, Cloud Security, Exploitation techniques, Microsoft Azure, Virtual Private Networks (VPN), Command-Line Interface
Beginner · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: Computer Security Incident Management, IT Security Architecture, Incident Management, Cloud Infrastructure, Cloud Standards
Beginner · Course · 1 - 4 Weeks