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.

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

Skills you'll gain: Email Security, Cybersecurity, Malware Protection, Network Security, Application Security, Information Systems Security, Cyber Security Strategy, Authentications, Data Security, Risk Management, Security Controls, Multi-Factor Authentication, Security Software, Threat Management, Risk Management Framework, Cryptography, Endpoint Security, Firewall, Threat Detection, Operating Systems
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Centers, Network Security, Network Administration, Virtualization and Virtual Machines, Network Troubleshooting, Virtual Machines, Network Monitoring, Wide Area Networks, Virtualization, Wireless Networks, Firewall, Event Monitoring, Cloud Infrastructure, Hardening, IT Security Architecture, Network Infrastructure, Virtual Private Networks (VPN), TCP/IP, Cloud Computing, Information Technology Operations
Advanced · Course · 1 - 3 Months

Skills you'll gain: NSX-T Network Virtualization, Virtual Networking, Virtualization, Network Architecture, Disaster Recovery, Software-Defined Networking, Network Security, IT Automation, Software-Defined Data Center (SDDC), Firewall, Security Controls, Information Technology Operations, Network Routing, Digital Transformation, Hybrid Cloud Computing
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cryptography, Cybersecurity, Network Security, Cryptographic Protocols, Cyber Attacks, Encryption, IT Security Architecture, Identity and Access Management, Threat Management, Threat Detection, Firewall, Key Management, Security Management, Infrastructure Security, Security Controls, Network Planning And Design, Authorization (Computing), Public Key Infrastructure, Authentications, Risk Management Framework
Beginner · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Core Data (Software), Apple iOS, iOS Development, JSON, Objective-C (Programming Language), OAuth, Authentications, Mobile Development, Single Sign-On (SSO), Web Services, Secure Coding, Data Store, Cryptographic Protocols, Application Security, Data Persistence
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Ansible, Puppet (Configuration Management Tool), Software-Defined Networking, Network Administration, Security Awareness, IT Automation, Chef (Configuration Management Tool), Virtual Private Networks (VPN), JSON, Network Engineering, Authentications, Computer Security Awareness Training, Network Infrastructure, Authorization (Computing), Identity and Access Management, Configuration Management, Cyber Security Policies, Remote Access Systems, Application Programming Interface (API)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, Network Security, Network Routing, TCP/IP, Network Administration, Open Shortest Path First (OSPF), Network Protocols, Network Switches, Virtual Local Area Network (VLAN), Network Monitoring, Firewall, Network Infrastructure, Network Troubleshooting, Border Gateway Protocol, Network Performance Management, Security Controls, Network Analysis, Authentications, Encryption
Intermediate · Course · 1 - 3 Months

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

Skills you'll gain: Network Security, Wireless Networks, Network Performance Management, Network Monitoring, Dynamic Host Configuration Protocol (DHCP), Ansible, Network Administration, Software-Defined Networking, Local Area Networks, Network Protocols, Infrastructure as Code (IaC), Terraform, Configuration Management, Encryption, Authentications
Advanced · Course · 3 - 6 Months

Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Virtual Private Networks (VPN), Network Security, Microsoft Azure, Network Routing, Cloud Security, Firewall, Virtual Networking, Wide Area Networks, Network Architecture, Network Troubleshooting, Network Monitoring, Cryptographic Protocols, Remote Access Systems, Security Controls, Event Monitoring, Encryption, Hybrid Cloud Computing
Intermediate · Course · 1 - 4 Weeks

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