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.

LearnQuest
Skills you'll gain: JUnit, Unit Testing, Software Testing, Test Tools, Java
★ 3.3 (13) · Intermediate · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Zero Trust Network Access, Cybersecurity, Cyber Security Strategy, Cyber Security Assessment, IT Security Architecture, Computer Security, Security Architecture Review, Network Security, Security Strategy, Enterprise Architecture, Cloud Security
Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Cloud Computing, Infrastructure Architecture, Cost Reduction, Cloud Hosting, Cloud Solutions, Cost Management, Network Infrastructure, Budget Management, Database Management, Load Balancing, Virtual Private Networks (VPN), Technical Support and Services, Technical Support, Financial Management, Network Security, Vendor Management, Resource Management, Customer Support, Configuration Management
★ 4.4 (136) · Beginner · Specialization · 1 - 3 Months

Peking University
Skills you'll gain: Microarchitecture, Computer Architecture, Computer Systems, Hardware Architecture, Computer Hardware, Computer Engineering, Peripheral Devices, Data Storage, Display Devices, Systems Architecture, Memory Management, Computational Logic, OS Process Management
★ 4.8 (483) · Mixed · Course · 1 - 3 Months

Aptly
Skills you'll gain: TikTok, Content Performance Analysis, Business Marketing, Data-Driven Marketing, Content Scheduling, Social Media Content, Social Media Marketing, Online Advertising, Brand Marketing, Social Media Strategy, Social Media, Marketing Strategies, Performance Measurement, Content Marketing, Content Creation, Video Editing, Video Production, Social Media Management, Advertising, Advertising Campaigns
★ 4.7 (148) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Threat Detection, Cyber Security Strategy, Cyber Threat Intelligence, Cybersecurity, Spatial Analysis, Interactive Data Visualization, Geospatial Information and Technology, Web Scraping, Digital Forensics, IT Automation, Data Security, Security Awareness, Vulnerability Scanning, Personally Identifiable Information, Scripting, Network Analysis, Open Source Technology, Information Privacy
★ 4.3 (12) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Kubernetes, CI/CD, Application Deployment, DevOps, Continuous Integration, Containerization, Continuous Delivery, Continuous Deployment, Package and Software Management, IT Automation, Git (Version Control System)
★ 4.4 (11) · Advanced · Course · 1 - 4 Weeks

Northwestern University
Skills you'll gain: Blogs, Social Media Marketing, Marketing Strategies, Social Media Strategy, Social Media, Social Media Content, Content Marketing, Social Media Analytics, Marketing Effectiveness, Digital Media Strategy, Marketing Design, Target Market, Drive Engagement, Customer Engagement, Content Creation, Multimedia, Writing
★ 4.8 (1.2K) · Mixed · Course · 1 - 4 Weeks

ConsenSys Academy
Skills you'll gain: Blockchain, Cryptography, Interoperability, Cryptographic Protocols, Encryption, Public Key Cryptography Standards (PKCS), FinTech, Emerging Technologies, Ledgers (Accounting), Distributed Computing, Case Studies, Digital Assets, Data Integrity, Transaction Processing
★ 4.7 (846) · Beginner · Course · 1 - 3 Months

Skills you'll gain: WordPress, Web Design, Web Analytics and SEO, Content Management Systems, Web Content, Frontend Performance, Cloud Hosting, Web Servers, Web Development, Security Controls, Content Management, Application Security, Computing Platforms, Software Installation, Role-Based Access Control (RBAC), User Accounts
★ 4.3 (36) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Penetration Testing, Vulnerability Scanning, Cyber Security Assessment, Vulnerability Assessments, MITRE ATT&CK Framework, Security Testing, Payment Card Industry (PCI) Data Security Standards, NIST 800-53, Network Analysis, General Data Protection Regulation (GDPR), Cloud Computing
★ 4.8 (9) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Data Literacy, Data Analysis, Applied Mathematics, Mathematical Modeling, Graphing, Trigonometry, R (Software), R Programming, General Mathematics, Data Modeling, Algebra, Systems Of Measurement, Mathematical Software, Correlation Analysis, Regression Analysis, Calculus, Business Mathematics, Geometry
★ 4.7 (330) · Beginner · Specialization · 3 - 6 Months