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 at Buffalo
Skills you'll gain: Intrusion Detection and Prevention, Security Controls, Continuous Monitoring, Incident Response, Cyber Attacks, Vulnerability Assessments, Software Development Life Cycle, Cybersecurity, Application Security, Computer Security Incident Management, Security Management, Cyber Security Strategy, Information Systems Security, Secure Coding, Cyber Security Policies, Cyber Security Assessment, Threat Management, Threat Detection, Information Assurance, Network Security
★ 4.7 (666) · Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Cloud Management, Cloud Computing Architecture, Identity and Access Management, Cloud Infrastructure, AWS Identity and Access Management (IAM), Virtualization and Virtual Machines, Virtual Machines, Cloud Security, Virtualization, Cloud Deployment, Cloud Platforms, Authorization (Computing), Infrastructure As A Service (IaaS), Cloud Services, Role-Based Access Control (RBAC), User Provisioning, Authentications, Security Awareness, Cyber Threat Intelligence, Cyber Security Strategy
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Software Testing, Business Logic, Test Tools, Cryptography, Cybersecurity, Identity and Access Management, Authentications, Vulnerability Assessments, Encryption, Data Validation, Network Protocols
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Penetration Testing, Security Testing, Cybersecurity, Network Security, Vulnerability Scanning, Brute-force attacks, Server Side, TCP/IP, Network Monitoring, Vulnerability Assessments, Servers, Network Analysis, Network Protocols, Exploitation techniques, Program Development, Scripting
Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Blockchain, Key Management, Public Key Infrastructure, Cryptography, Application Security, Encryption, Secure Coding, Public Key Cryptography Standards (PKCS), Security Testing, Vulnerability Management, Solution Design, Cyber Governance, Vulnerability Assessments, Code Review, Authorization (Computing), Data Integrity
★ 4.5 (11) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Security Controls, Security Awareness, Change Control, Computer Security Awareness Training, Cybersecurity, Security Management, Information Assurance, Data Security, Safety and Security, Cyber Security Policies, Enterprise Security, Data Ethics, Human Factors (Security), Cyber Security Assessment, Data Integrity, Authorization (Computing), Identity and Access Management
★ 4.7 (114) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Business Continuity Planning, Continuous Monitoring, Business Continuity, Security Management, ISO/IEC 27001, Security Controls, Threat Management, Risk Management, Law, Regulation, and Compliance, Risk Analysis, Risk Management Framework, Security Strategy, Cyber Risk, Regulation and Legal Compliance, Cyber Governance, Threat Modeling, Governance Risk Management and Compliance, NIST 800-53, Cybersecurity, Compliance Management
★ 4.8 (83) · Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Computer Security Incident Management, Endpoint Security, Incident Management, Incident Response, ISO/IEC 27001, Security Management, Vulnerability Scanning, Digital Forensics, Risk Management, Risk Management Framework, Personally Identifiable Information, Linux, Linux Administration, Infrastructure Security, Authorization (Computing), Network Security, Threat Management, Event Monitoring, Role-Based Access Control (RBAC), Security Strategy
★ 4.7 (73) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Infrastructure Security, Vulnerability Management, Vulnerability Assessments, Incident Response, Security Strategy, Cybersecurity, Cyber Security Assessment, Distributed Denial-Of-Service (DDoS) Attacks, Cyber Security Strategy, Cyber Attacks, Incident Management, Cyber Operations, Threat Management, Cyber Threat Hunting, Network Security, Cyber Security Policies, Intrusion Detection and Prevention, Internet Of Things
Intermediate · Course · 1 - 3 Months

AI CERTs
Skills you'll gain: Threat Modeling, Security Controls, Key Management, Security Management, Cybersecurity, Cyber Attacks, Hardening, Enterprise Security, Cyber Security Assessment
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: AI Security, Penetration Testing, Exploit development, Network Security, Exploitation techniques, Open Web Application Security Project (OWASP), Cyber Security Assessment, Unix, Cyber Operations, Computer Security, Cybersecurity, Artificial Intelligence and Machine Learning (AI/ML), Cryptographic Protocols, Network Protocols, Cryptography, Security Awareness, Generative AI Agents, Server Side, Web Applications, Machine Learning Algorithms
★ 4.4 (22) · Intermediate · Specialization · 3 - 6 Months

Google Cloud
Skills you'll gain: Load Balancing, Application Deployment, Cloud Management, Cloud Applications, Google Cloud Platform, Cloud Computing, Virtual Machines, Cloud Infrastructure, Web Servers, Servers, Network Model, Network Analysis
★ 4.8 (10) · Beginner · Project · Less Than 2 Hours