About this course
Learn how networks are attacked and defended. This course covers the OSI model, TCP/IP, firewalls, VPNs, intrusion detection, and the core security controls that protect modern infrastructure. Build a home lab to practice packet analysis with Wireshark, firewall configuration, and network reconnaissance — all with a defensive mindset.
Course Content
Networking Foundations
- How Packets Move: LANs, WANs, and DNS15min
- The OSI Model and TCP/IP Stack15min
- IP Addressing, Subnetting, and Routing15min
- Common Network Devices and Topologies15min
Security Controls
- VPNs and Encrypted Tunnels15min
- Network Segmentation and Zero Trust15min
- Firewalls: Stateful and Next-Gen15min
- Intrusion Detection and Prevention (IDS/IPS)15min
Traffic Analysis
- Packet Analysis with Wireshark15min
- Detecting Anomalies and Port Scans15min
- Project: Analyze a Capture for Threats15min
- Reading Network Traffic and Protocols15min
Defensive Operations
- Incident Response Fundamentals15min
- Building a Home Security Lab15min
- Hardening Network Devices15min
- Monitoring and Logging Best Practices15min
Free — no credit card required
This course includes:
- AI-generated interactive lessons
- Interactive quizzes and exercises
- Real-time AI teacher discussions
- Whiteboard diagrams and formulas