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.

Coursera
Skills you'll gain: Canva (Software), Social Media Content, Content Creation, Content Performance Analysis, Social Media Marketing, Marketing Effectiveness, Content Development and Management, Video Production, Digital Media Strategy, Style Guides, Digital Design, Graphic Design, Graphic and Visual Design, Marketing Analytics, Web Analytics, Video Editing, Performance Measurement, Brand Management, Key Performance Indicators (KPIs), Drive Engagement
★ 4.5 (6.2K) · Beginner · Specialization · 3 - 6 Months

New York University
Skills you'll gain: Security Engineering, Threat Modeling, Distributed Denial-Of-Service (DDoS) Attacks, Cyber Attacks, Cybersecurity, Threat Management, Cyber Risk, Cyber Security Assessment, Information Systems Security, Network Security, Computer Security, Exploitation techniques, Risk Management Framework, Cryptography, Data Integrity
★ 4.7 (2.9K) · Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Oracle SQL Developer, Oracle Databases, PL/SQL, Databases, Relational Databases, SQL, Database Management Systems, Database Architecture and Administration, Stored Procedure, Database Management, Data Management, Network Architecture, Software Development Tools, Change Control
★ 4.6 (121) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Security Strategy, Cybersecurity, Incident Response, Computer Security Incident Management, Cyber Attacks, Cyber Security Policies, Incident Management, Cyber Threat Intelligence, Security Management, Intrusion Detection and Prevention, Security Strategy, Cyber Threat Hunting, Cyber Risk, Threat Management, Data Security, Security Controls, Encryption, Resilience, Risk Management, Security Software
Beginner · Course · 3 - 6 Months

University of California San Diego
Skills you'll gain: Data Structures, Graph Theory, Algorithms, Bioinformatics, Data Storage, Development Testing, Theoretical Computer Science, Computational Thinking, Network Analysis, Computer Programming, Programming Principles, Python Programming, C and C++, Infectious Diseases, Java Programming, Java, Rust (Programming Language), Javascript, Software Testing, Debugging
★ 4.6 (17K) · Intermediate · Specialization · 3 - 6 Months

Vanderbilt University
Skills you'll gain: Claude Code, Prompt Engineering, Model Context Protocol, ChatGPT, Prompt Patterns, Anthropic Claude, Token Optimization, AI Workflows, Prompt Engineering Tools, Generative AI Agents, Multimodal Prompts, Agentic Workflows, AI Orchestration, AI Enablement, Generative AI, Artificial Intelligence and Machine Learning (AI/ML), AI Security, Agentic systems, AI Product Strategy, AI Personalization
★ 4.8 (8K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Network Architecture, General Networking, Wireless Networks, Networking Hardware, TCP/IP, Virtual Networking, Network Routers, Network Administration, Local Area Networks, OSI Models, Network Infrastructure, Computer Networking, Virtual Local Area Network (VLAN), Network Model, Network Security, Software-Defined Networking, Network Switches, Network Protocols, Command-Line Interface
Beginner · Course · 1 - 3 Months

Skills you'll gain: Cybersecurity, Network Protocols, Cyber Attacks, Threat Management, Threat Modeling, Security Controls, Responsible AI, Cyber Security Strategy, Cyber Security Policies, Data Security, Security Awareness, Computer Security Awareness Training, Agile Methodology, Cyber Security Assessment, Security Management, Network Security, TCP/IP, Incident Response, Threat Detection, Risk Management
★ 4.6 (1.1K) · Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Multi-Factor Authentication, Authentications, Identity and Access Management, Security Controls, Security Awareness, Data Security, Safety and Security, Security Management, Human Factors (Security), Cyber Security Strategy
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: User Story, Cloud Computing Architecture, Agile Software Development, Cloud Services, Scrum (Software Development), Cloud Deployment, Agile Methodology, Kanban Principles, DevOps, Backlogs, Cloud Security, Cloud Technologies, Cloud Infrastructure, Sprint Retrospectives, Cloud Platforms, Cloud Computing, Cloud-Native Computing, Devops Tools, Continuous Integration, CI/CD
★ 4.7 (14K) · Beginner · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Data Preprocessing, Feature Engineering, Model Evaluation, Bioinformatics, Exploratory Data Analysis, Random Forest Algorithm, Pandas (Python Package), Scikit Learn (Machine Learning Library), Applied Machine Learning, Data Manipulation, Data Processing, Dimensionality Reduction, Data Cleansing, Model Optimization, Keras (Neural Network Library), Machine Learning Algorithms, Data Transformation, Model Training, Machine Learning, Data Science
★ 3.3 (102) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Digital Forensics, Penetration Testing, Network Security, Threat Management, Mobile Security, Distributed Denial-Of-Service (DDoS) Attacks, Cloud Security, Public Key Infrastructure, Vulnerability Assessments, Security Testing, Cryptography, Security Controls, Cryptographic Protocols, Cyber Security Assessment, Cybersecurity, Authorization (Computing), Cloud Computing, Malware Protection, Cyber Attacks, Data Integrity
★ 4.6 (805) · Beginner · Specialization · 3 - 6 Months