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: File Systems, Linux Administration, Data Storage, Linux, Operating Systems, Linux Commands, Data Management, Systems Administration, Data Security
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Facebook, Online Advertising, Web Analytics, Social Media Marketing, Digital Advertising, User Accounts, Compliance Management
Intermediate · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: Code Review, GitHub, Git (Version Control System), Version Control, Docker (Software), Software Development Tools, Continuous Integration, Containerization, Bioinformatics, Informatics, Automation, Data Analysis, R Programming
Advanced · Course · 1 - 3 Months

Skills you'll gain: Network Troubleshooting, Linux Administration, Linux Servers, Linux, Dynamic Host Configuration Protocol (DHCP), General Networking, Network Protocols, Network Infrastructure, TCP/IP, Network Administration, Ubuntu, Red Hat Enterprise Linux, Servers, System Configuration, Command-Line Interface, YAML
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Authentications, Hardening, Key Management, Data Security, Cloud Security, Security Management, Security Controls, Encryption, Authorization (Computing), Identity and Access Management, Data Management, System Configuration, Servers, Configuration Management, Database Management
Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Microsoft Azure, Cloud Computing, Cloud Computing Architecture, Virtual Machines, Cloud Infrastructure, Application Deployment, Infrastructure As A Service (IaaS), Cloud Storage, Virtualization and Virtual Machines, Hybrid Cloud Computing, Virtual Networking, Windows PowerShell, Scalability, Load Balancing, Command-Line Interface
Beginner · Course · 1 - 3 Months

Starweaver
Skills you'll gain: Digital Forensics, Electronic Discovery, Investigation, Criminal Investigation and Forensics, Incident Response, Cyber Threat Intelligence, Technical Communication, Computer Security Incident Management, Report Writing, Cybersecurity, Cyber Security Policies, Fraud detection, Legal Proceedings, Law, Regulation, and Compliance, Ethical Standards And Conduct, Business Ethics, Compliance Reporting, Data Collection, Analysis, Management Reporting
Beginner · Course · 1 - 3 Months

Skills you'll gain: IT Management, Information Assurance, Test Planning
Intermediate · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Cybersecurity, Cyber Attacks, Threat Detection, Exploitation techniques, Threat Modeling, Malware Protection, Security Awareness, SQL, Databases
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Apache Maven, Model View Controller, Unit Testing, Spring Boot, Restful API, Data Persistence, Software Testing, Java, Back-End Web Development, Front-End Web Development, Authentications, Data Modeling, Business Logic
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Healthcare Ethics, Health Informatics, Machine Learning, Deep Learning, Machine Learning Software, Clinical Informatics, Statistical Machine Learning, Convolutional Neural Networks, Data Preprocessing, Predictive Modeling, Electronic Medical Record System, Machine Learning Algorithms, Recurrent Neural Networks (RNNs), Model Evaluation, Data Analysis
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Sprint Planning, Process Improvement, DevOps, User Story, Scalability, Innovation, CI/CD, Continuous Integration, Product Lifecycle Management, Capacity Planning, Organizational Change, Product Development, Key Performance Indicators (KPIs), Meeting Facilitation, Prioritization, Scope Management, Dependency Analysis, Maintainability, Goal Setting, Capacity Management
Beginner · Specialization · 1 - 3 Months