Networking made simple
Understand networks.
One packet at a time.
Learn networking through clear explanations, visual packet journeys, and hands-on practice.
◈ Visual learning⌘ Hands-on practice✓ Build real skills
A packet’s journey
Core Topics You’ll Learn
Focus on the fundamentals. Build a strong foundation.
Interactive packet lab
Try the packet lab
Change a network setup, predict what happens, and watch each packet hop.
Try a sample lab →Your learning journey
Build understanding one module at a time.
01Computer Network Basics9 lessons
02Ethernet, Switching and Local Networks6 lessons
03IP Addressing and Routing5 lessons
04Transport and Application Services5 lessons
05NAT and Internet Communication3 lessons
06Packet Analysis and Troubleshooting1 lessons
Build your networking skills today
Start with a free lesson and learn what really happens when devices communicate.